(at around 47 mins) When Mason answers the phone in the chase scene, the vehicle's owner says, "you have my Hummer, you stole it" to which Mason replies, "I'm only borrowing your Hum-Vee." But how could he have known that a Hummer was also referred to as a Hum-Vee?
(at around 1h 27 mins) While Agent Goodspeed is describing the horrible effects of VX gas, the part where he says "it melts your skin off" does not match his mouth movements, and sounds different than the rest of the audio (since real VX gas does not melt skin (see above), it was probably added to make VX gas seem scarier to the audience).
Captains Frye and Darrow are constantly referred to as "soldier", something no Marine would ever stand for. This is because they are most likely former U.S. Army Rangers as the black beret, then the uniform item that distinguished them as such, indicated this.
(at around 44 mins) When Goodspeed first s the Ferrari, it's clear that he isn't familiar with Ferrari's gated shifter system in the F-355. He shifts into 3rd gear and promptly lays rubber. Though the 355 has ample power to start in 3rd gear, the smoky burnout had to have been accomplished in 1st.
The FBI never thinks about motivating Mason to cooperate by telling him that the entire city, including his daughter may be killed. Stanley tells him only after he tries to jump ship. No more specific details would have been necessary, only the fact that the civilians in danger include Jade.
Also, on the beach on Alcatraz Island, Mason wants to quit before the mission is complete, even though by that point, he knows his daughter is still in danger.
It is highly unlikely the President of the United States would appoint someone as young as thirty three years old to be his Chief of Staff, regardless of his/her background, he/she wouldn't have enough political experience let alone life experience to hold such a high ranking position.
When Private Cox and Mason are engaging in a fist fight, Private Cox says "English prick. I ever tell you my old man was Irish?" Mason is in fact Scottish (as confirmed when his record is shown earlier in the film and his place of birth is listed as Glasgow, Scotland). Private Cox may mistakenly be using the term English instead of British, for example (as Britain would incorporate Scotland too).
Paxton gives Mason a quarter and sarcastically tells him to call his lawyer because he's going back to jail, Mason was incarnated in prison, not jail. Minutes later Stanley makes the same goof by saying jail, not prison.
Mason claims that Hummel is bluffing, he can tell it from Hummel's eyes. The assumption that nobody in Hummel's crew would launch the missiles for their own agenda (half of them Mason hasn't even met) is unrealistically optimistic, especially from a former military intelligence agent.
(at around 48 mins) When the Ferrari crashes through the parking meters, the indicator lights on the bumper have disappeared (presumably as this car is a mock up), but in the next shot of the Ferrari from the front, the lights have reappeared.
Cpt. Darrow's main rifle changes throughout the film. During the shootout in the shower room, it is a M16 (SP1) rifle with a "slab-side" upper receiver (no forward assist) and an M203 grenade launcher. During the lighthouse scene when Darrow confronts Goodspeed (Nicholas Cage), his rifle switches from this M16/M203 to a Colt Commando CAR-15 carbine fitted with an M203.
(at around 1h 50 mins) The plane which rolls out of the hangar is a two seat F/A-18 Hornet, yet all aircraft in the flight squadron are single seaters. This plane has no tail markings such as aircraft registration number and squadron ID.
(at around 1h 40 mins) Mason tries to open his cell door by manipulating the door lever using the torn duvet cover. At first he hits the one opening the cell next to his own, and as he gets it right on the second try we see that the lever falls down as the door goes up. However, the lever that opened the first door is still in the upright position.
Towards the end of the film the configuration of the Colt Commando CAR-15 rifles change. For instance, when Mason gives Goodspeed the CAR-15 from the guard he killed, it has an A2 upper receiver (shell deflector, A2 windage sight knob) and an SP1 lower receiver (no fencing around the magazine release). Later when watching the rocket launch, Goodspeed's CAR-5 switches to an all around A1-style gun with no shell deflector and older style sights. The lower receiver also has magazine fencing at this point. The same also happens with the other Marines' guns.
(at around 1h 12 mins) During the shower room scene, Major Baxter who is on the immediate right of the General is seen carrying an M16A2 rifle. A few frames later his weapon magically transforms into a . A frame later his weapon transforms back into an M16A2. The final frame shows him holding his Colt Commando.
(at around 7 mins) The disguised Marine that shoots the two guards inside the weapons depot is wearing gloves. Later, when he drops the VX gas canister, he's not wearing them. Although it's possible that he took them off, even if he did, he's shown wearing them a second later (when Major Baxter yells "Evac!"). Then it shows him banging on the door without them on.
(at around 53 mins) After Mason talks to Jade, Womack steps forward and starts to moan about damages to San Francisco, his jacket changes position over his injured shoulder. He lifts his arm in a motion to show how he's been injured and his jacket slides off his shoulder. When the camera cuts back to him his jacket is normal again.
(at around 49 mins) After the trolley car destroys his Ferrari, Goodspeed steals a dirt bike. When he knocks the rider off, the rider falls to the left side of the bike. However, in the next scene he is on the ground to the right of the bike.
(at around 1h 1 min) When Shepard picks up Mason's bag on the helicopter, he is wearing his headset. However, when the shot changes to a closeup while he describes the gear inside, the headset is gone.
(at around 32 mins) When Mason is being held in the interrogation room (while being tricked into helping with the operation) we see a monitor in the room behind the mirror on which Mason is seen - the image on it suggests a camera pointing at him directly from the front, at the same height as his head, but as we see in the shots from inside the interrogation room, the only thing in front of Mason is the table and the door, no camera anywhere in sight (we also see people coming through the door several times, revealing that there isn't a camera outside it either).
(at around 45 mins) As the police chase comes down the street towards the parked car and telegraph pole that Mason will eventually hit, there is only one FBI Suburban and one SFPD patrol car following him (along with Stanley's Ferrari and the two FBI sedans). In all other scenes during the chase, it is clear that there are three patrol cars and two Suburbans in the pursuit. They reappear when the FBI sedans crash and all come to a halt.
(at around 45 mins) It is obvious throughout the pursuit that there are only two unmarked FBI sedans involved. However they continually change between a Chevrolet Caprice and Ford LTD-Crown Victoria (the combination in most scenes) to two Chevrolet Caprices. This is most evident when both units roll trying to avoid the telegraph pole - on approach they are the Ford and Chevrolet, but when crashing both are Chevrolets.
(at around 44 mins) During the police chase, the two FBI sedans are shown as having two agents each in the front (one shot shows three in the LTD-Crown Victoria), however from the moment they come over the hill and approach the pole/parked car Mason hits and then crash, there is only one agent in each.
(at around 45 mins) When the first unmarked FBI unit smashes through the wreckage of the VW Bug Mason drove over at the construction site, the vehicle behind it can be seen to be another unmarked Chevrolet Caprice (with push bar). In the next shot, it is the Ford LTD-Crown Victoria without a push bar. Two shots later, the first Caprice now has two patrol cars behind it and another unmarked Caprice is following those.
(at around 23 mins) When Gen. Hummel is on the phone with the Pentagon stating his demands he tells Gen. Kramer and the others they have 40 hours, "noon - day after tomorrow" to deliver the money. Hummel contacted the Pentagon at midnight, so the deadline would actually be around 16:00 the "day after tomorrow".
(at around 1h 8 mins) During the time when Hummel's men are trying to determine if anybody has landed on the island, Sgt. Rojas is manning the radio gear. He is also shown participating in the search at the same time.
General Hummel at one point says there are 17 hours left until the deadline, and it is bright sunshine outside. However, the next scene shows pitch dark, and the text on the screen declares 15 hours to deadline.
(at around 1h 45 mins) The coordinates given for Alcatraz when the missile is launched are 67°25'0"N by 37°25'0"W. These actually put you in Greenland. (Alcatraz is actually at 37°49'36"N by 122°25'23"W.)
(at around 1h 45 mins) The launched missile is said to be launched toward a football game in Oakland. However, the next shot shows the missile flying over Candlestick Park in San Francisco, not the Oakland Colliseum. In fact, the missile is clearly shown grazing trees on top of Bayview Hill.
There are many errors throughout the film in terms of geographical locations of characters on Alcatraz. For example when where we see Mason for the last time, it is not possible for Goodspeed to be sat in a location where Building 64 can be behind him on his right and the Post Exchange building to be across to his left at the same height level.
(at around 20 mins) When Womack first receives a telephone call from Hummel, he turns to his secretary and says "call the San Francisco office... it's seems like Alcatraz has just been reopened." The very next shot is an aerial view of the Pentagon. The lights are on at the Pentagon, but there is some daylight - indicating that it is either very early in the morning or later afternoon/early evening. However, the text on the screen then says "PENTAGON 11:58." Now this is impossible. At 11:58, since no indication of time convention for a twelve hour clock (the use of AM or PM after the time) it would either be pitch black or full daylight. If he is using the 24 hour clock, as used by the US Military, it would be full daylight. If he was attempting to indicate 11:58PM, he would have used 2358. And no semi-colon would be used for a 24 hour clock.
(at around 29 mins) After Goodspeed is informed that it is not a training exercises, they show a shot of Pier 39 in San Francisco and show the FBI setting up their mobile command center. It is in an enclosed warehouse setting. Pier 39 is an open air area with restaurants, shops and lots of public area. Not inside a warehouse.
After the first missile is launched, the FBI agent says the missile is on a heading of "185 degrees south, southeast." On a compass, 185 degrees is southwest, not southeast. Furthermore, this heading would take the missile towards San Francisco, not Oakland. Oakland is nearly due east from Alcatraz.
VX in liquid form, as presumably shown in the film by the small balls containing the substance, does not take effect immediately. After absorption through the skin and/or mucous membranes, it takes approx 1 to 2 hours before visible nerve agent symptoms begin to show. However, if a person is exposed to the aerosol form of VX, effects are immediate. In either case, the symptoms of VX poisoning resemble more of a full-body seizure than a bubbling/melting of the skin. Atropine must only be injected into the heart when poisoning by the aerosolized version occurs. Otherwise, the atropine is injected into the thigh. Furthermore, Atropine is also poisonous to the human body when it's injected into the body before aerosolize exposure occurs, either case Atropine's main side effect weakens the human body to the point of incapacitation and would be in no fit state to diffuse a bomb or get up and run and wave flares as depicted in the movie.
(at around 29 mins) VX was not discovered by mistake. It was discovered by Dr. Ranajit Ghosh, when he did research on pesticides. It was not a failed pesticide either, it was used as a pesticide until 1954-55. It was however, withdrawn due to its high toxicity. From 1961, it was manufactured for weapons use.
As the Marines are patrolling, they continuously charge their weapons. While on patrol, it would be assumed that they would already have a round in the chamber. As a result, charging the weapon again would not only be unnecessary, but it would cause the weapon to eject a perfectly good round.
(at around 48 mins) During the chase, when Goodspeed crashes the Ferrari into the parking meters, several dozen coins spill out, including a good number of pennies. Modern San Francisco parking meters do not accept pennies (and have not in decades).
(at around 1h 50 mins) As the F/A-18s roll out of the hangar, the markings under the canopy say U.S. Air Force, but if you look just above the wings you can still see the VFMA markings indicating this is a U.S. Marine Corps jet.
Mason opens his cell by lassoing a release lever unlocks the door and allows it to swing open. There are two mistakes here. Firstly, all the cells in Alcatraz have sliding doors that are locked simultaneously by secure mechanisms at the end of each row. Secondly, the mechanisms that control the locks are housed in secure cabinets and require keys to operate. Opening an individual door with a piece of metal attached to a rope is simply not possible.
(at around 1h 4 mins) When the SEAL team arrives with their miniature submarines at Alcatraz a view at the cockpit display a speed of 67 kph just before they arrive at the entrance. Under no circumstances can any mini-submarine go that fast, and even if that were possible it would not be feasible to drive that fast just before the arrival, since it would be impossible to brake in time. The mini-sub actually operates at a max of 18 knots (41 mph, 36 kph)
(at around 1h 50 mins) The aircraft used to drop the thermite plasma are F/A-18 Hornets, which are normally US Navy or US Marine Corp jets, but they have US Air Force markings as do the pilots flying them. The Air Force flies F-15 Eagles, F-16 Falcons, and F-22 Raptors.
(at around 1h) The AH-1 Cobra gunships used in the infiltration scene are not Marine helicopters, but rather the Army model. The Marine version is an updated model with twin jet engine propulsion turbines, the Army model used in the infiltration scene still uses a single jet turbine to turn the rotors. This can be seen by observing the single exhaust port instead of the twin exhaust on the marine model. During a Navy S.E.A.L. incursion marine helicopters would escort the transport helicopter, not Army Cobras as depicted in the film.
(at around 43 mins) The unmarked Caprice that comes flying out of the hotel parking lot at the start of the chase has a front US Government license plate with the General Services Administration prefix G15, while another (that lands hard coming down the hill) has the prefix G13. Both of these are erroneous - G15 is an invalid prefix, while G13 denotes a subcompact sedan, which a Chevrolet Caprice clearly is not. Both plates should have a G14 prefix, which denotes a large sedan.
During the Pentagon briefing it is mentioned that none of the guards are a help for the layout of Alcatraz and that the last warden died in 1979. Although dead at the time of the movie, Olin G. Blackwell, the fourth and last warden, died in 1986.
(at around 1h 45 mins) When the first missile is launched toward San Francisco, there is concern about it striking a stadium where a football game is being played. West Coast games have a 1pm start time for TV purposes, and generally do not open the gates until 12:15pm. If noon is the deadline, then no-one other than the players, stadium employees, and TV crews would be at the stadium. Yet when the stadium, Candlestick Park, the night lights are on, and the stadium appears full. The night lights would not yet be on.
"Possible penetration point in the shower room" says Captain Hendricks. The shower room in fact has a solid concrete floor, with no sizable drains, and also, the Seals could not have been shot from an elevated position as dictated in the film as there is no additional level to the shower room.
When John Mason loops rope around FBI Director Womack's wrist and throws him over the balcony, the length of the drop and Womack's weight would have produced enough velocity to tear Womack's arm from its shoulder. It's exactly the same as those who've been hung incorrectly and subsequently decapitated.
When Hummel gives the command to fire the missile at the deadline, a man stands beside the missile peering through some optical sight. But a missile that size would kill anyone that close when the launch motor fired.
Several scenes that are depicted as being on location are in fact complete fabrications. The shower room looks extremely different in reality and there is no such "lower lighthouse"; both were fabricated sets for the film. In addition, scenes that required damage to structures, such as the shootout late in the film and various fights throughout, all take place on sets as Alcatraz itself is protected from damage as part of the Golden Gate National Recreation Area.
The idle of the dirt bike after a long chase . When Goodspeed pulls up to the House of Fine Arts after locating Sean Connery's character after he gets away from the hotel, the idle of the dirt bike is too high for a motorcycle that has just been in a Chase across the city. Instead it makes the sound of a motorcycle that has just been started after it has sat for an extended amount of time and is idling back down due to having a cold engine.
(at around 1h 5 mins) When Mason is with the troops in the basement of Alcatraz, he states that he studied the timing of the boiler that he must roll through. The question has often been asked why he wouldn't then just be able to open the door during his original escape. However, when Alcatraz was functional, the door may well have been guarded or locked from the other side.
Mason has been imprisoned for the past 30 years yet when he escapes he knows how to work a cell phone (reasonable, since it's not hard; he also mentions that he watched TV in jail, so he has probably seen plenty of examples) and modern scuba gear (which hasn't changed all that much).
Though it is unusual for the President of the United States to appoint someone as young as thirty-three years old as his Chief of Staff, both Presidents Ford (Dick Cheney) and Carter (Hamilton Jordan) had Chiefs of Staff under 35 years of age.
(at around 44 mins) Whilst in pursuit of Mason after his escape from the hotel, Paxton states over the radio that he [Mason] is driving a black "Hum-Vee". A Hum-Vee (or HMMWV) is a military vehicle. The civilian model that was made by AM General, the manufacturers of Hum-Vees, was released under the brand name "Hummer". However, the term "Hum-Vee" is also popularly used to refer to the civilian brand.
(at around 1h 55 mins) Right before the Marines betray General Hummel, Captain Darrow refers to Gunnery Sergeant Crisp simply as "Sergeant". NCO's and SNCO's in the Marine Corps are always referred to by their full rank, i.e, "Gunnery Sergeant", never simply "Sergeant". Captains Frye and Darrow are, however, likely Army captains and not Marines (multiple evidences are given for this), and so they are not as immune to this mistake.
Incorrectly regarded as goof: The Chemical Weapons Convention of 1993 did not ban the production and stockpiling of nerve agents, it just put a limit on the amount allowed to be produced and stockpiled. In the case of VX gas a country is allowed to produce and stockpile no more then 100 grams per year.
Incorrectly Regarded as Goof: When Goodspeed says that VX gas was discovered by accident, he is technically correct. The biochemist that discovered it in the 1950's wasn't trying to make a nerve agent or even a chemical weapon, he was trying to create a pesticide. The gas was originally called Amiton and was actually used as a pesticide for a short time before being taken off the market for being unsafe to use around humans because of it's harmful affects on the nervous system. When word of Amition's affects on the human nervous system reached the British military they wanted to investigate Amiton's potential use as a nerve agent. VX became Amiton's military designation and after some research and modification VX was made into a chemical weapon of mass destruction became the most deadly nerve agent ever created.
Despite having been unused for 33 years, all the mechanisms for the tracks and carts in the caves seem to work fine. The rope is also strong enough to halt a cart moving at moderately high speed, with the additional weight of two fully grown men on it and there is very little evidence of rusting, despite the incredibly damp environment.
When Mason brings Goodspeed and crew back to the Rock, he shows how he escaped by ducking under the heating vent, but to go back in he goes under the vent and then opens the door from the inside to let the crew in. If the door opens from the inside, why did he have to duck under the vent to escape?
General Hummel was lauded as possibly the greatest battalion commander of the Vietnam War, which ended in 1973, and was awarded the Medal of Honor for his actions as such. The movie is based in a time line that occurs over 20 years after our last troops left Vietnam yet Hummel seems to only been promoted twice going from lieutenant colonel (O-5...the standard rank for a battalion commander) to brigadier general (O-7). This seems highly unlikely especially considering the awarding of the United States highest award for valor.
Early on in the film, General Patterson says that a teaspoon of VX gas is lethal up to 100 foot radius. Later on when Goodspeed smashes an entire VX ball into a soldier's mouth nothing happens to Mason, the hostages, or anybody else nearby on the island.
It is specified that the F.B.I. loses radio contact with Goodspeed and Mason due to the undergrounds explosions, but they still have them on locators. However, it is never specified that the F.B.I. loses tracking of Goodspeed and Mason on the locators, particularly after they exit the morgue.
Throughout the San Francisco car chase scene, driver frequently turn their steering wheels as if they were on a narrow and winding lane when their cars are moving in a more or less straight or at least consistently curved line. numerous cars are also shown to explode after being hit at roughly forty to fifty miles an hour. Both are common goofs for the genre but happen so frequently in such a short space of time in this movie that it's worthy of a mention.
(at around 37 mins) Mason smashes through the one-way glass observation window of the interrogation room after scoring a circle in the glass. However, his elbow smashes a hole in the center of the scored circle. None of the glass that was scored cracked.
At several points in the movie, the Marines are firing M4s; sometimes they eject cartridges, but when you see a closepup of the captain firing at Goodspeed and Mason, there are no cartridges being ejected from the weapon.
(at around 45 mins) During the car chase, Mason runs the Hummer into a telephone pole, knocking it over. Subsequently, two of the FBI chase vehicles flip over (one tries to cut his wheel too hard to avoid it and the other runs into a parked car). The driver of both cars is the same man.
(at around 48 mins) When the Ferrari finally is destroyed, it appears that it is simply a shell sitting over a chassis. The shell seems to almost jump off the chassis upon impact, indicating that it wasn't bolted in as it should be.
(at around 47 mins) When driving the Hummer in San Francisco and swerving to avoid the old lady crossing the street, Mason hauls the steering wheel clockwise (from his point of view) but the car turns left, for which he would have had to turn the wheel anti-clockwise.
(at around 1h 30 mins) The scene when Goodspeed shoots the soldier choking Mason in the overhead cart. Mason tells Goodspeed, "I'm glad you didn't hesitate." They switch back to the dead soldiers' body and a close-up of his face and the soldiers' eyes blink twice slightly.
(at around 48 mins) When the tram crushes the Ferrari, the alloy wheels that come apart from the car are not Ferrari alloys (showing this is another mock up car and not a real Ferrari). These mock alloys can also be seen resting on the ground when Goodspeed turns to observe the crushed Ferrari.
(at around 44 mins) When Goodspeed gets in the Ferrari and closes the door, you can see that it's the door of the real F-355. Later (at around 48 mins) when the tram destroys the car, the door is that of the stunt vehicle and, understandably, not of the real Ferrari.
(at around 1h 13 mins) During the firefight in the shower room, several spent ammunition casings are visible on the ground. However, the casings are crimped at the end clearly indicating they are "blank" ammunition.
(at around 1h 25 mins) In the morgue scene, when Mason shoots the marine's feet he is shown to be firing at an angle almost parallel to the ground and from ground level, which would result in the marine getting shot in the front of his boots. The resultant bullet holes are on the tops of his boots and explode outward - impossible from the angle of shot shown - revealing them to have been caused by explosive squibs inside the boots.
The goof items below may give away important plot points.
(at around 2h) Before Goodspeed injects himself with the antidote, he activates the spring-loaded needle of the auto-injector, then manually forces the needle into his chest. Auto-injectors are designed to be placed it directly against the skin, so when activated, it propels the needle directly into the body. What he does in the film makes no sense, especially considering the amount of force a chest injection through clothing would require, and the fact that he's been weakened by nerve agent exposure.
(at around 2h 5 mins) After Mason pulls Goodspeed out of the water at the end, he is asked over the radio if the hostages are alive. Goodspeed replies "every one of them". While he could have confirmed that they were not hit by the bombs, he could not have possibly known that none were shot by Hummel's team in the last 24 hours, so he probably assumed this was the case.
It's extremely foolish from Hummel, a decorated military leader, to assume that all his crew would flush their military career and their American citizenship down the toilet, potentially for no gain, and nobody would argue against it. Especially as two of his deputy leaders (Frye and Darrow) he didn't even meet before the mission, as he says on the first assembly.
The threat to kill 80,000 innocent people is quite paradox with Hummel & co. using sleeping darts to guarantee the zero body count when hey stole the VX missiles. For some reason, nobody thinks of this in the Pentagon, even though they know the method Hummel used, as stated in a Pentagon scene.
(at around 1h 55 mins) During the standoff between Hummel, Maj. Baxter, Capts. Frye and Darrow, and Gunnery Sgt. Crispe, when Mason and Goodspeed are looking through the slot, Capt. Frye only has a 9mm handgun: however, once the shooting started, Capt. Frye shot at Mason and Goodspeed with an M-4 assault rifle.
(at around 1h 55 mins) When Goodspeed is talking to Captain Darrow in the lighthouse, Darrow drops his gun while taunting Goodspeed. When asked if he likes Elton John's 'Rocket Man' you can see him holding his gun when he responds.
(at around 1h 55 mins) When General Hummel is shot, he flies backwards and his left leg momentarily comes into the picture. The wires used to detonate the squibs can be seen coming out of his left pant leg near his boot.
(at around 1h 55 mins) After Hummel is shot, Goodspeed drags Hummel away from danger and is kneeling next to Hummel interrogating him. While Mason is providing cover fire, there is a glimpse of a crew member/actor darting across the room behind him.
During the final shootout after the soldiers mutiny against Hummel, you can see Hummel make a dive behind a wall. As he does this, you can see in the lower half of the screen the small blue corner of a mat that was used. Note that this is only visible in the normal TV format and can't be seen in the wide-screen format.
After Goodspeed and Mason have been captured, and it shows the words "52 minutes to deadline", that would make it 11:08 in the morning. When they launch the first rocket, the sun is really far down in the west, making it appear to be about 7:30 p.m., not 12 midday. When Hummel aborts it, it's blue sky. When Goodspeed launches the green flares, the sky changes from sunset to midday to sunset in about ten seconds. When he is rescued by the FBI, it's almost dark, about 9 p.m. But in reality, according to the deadline, it's only about 1 p.m. at most.
(at around 2h 10 mins) The final scene is located at St. Michael's Church in Fort Walton, Kansas. However, when Carla and Stanley leave the church, they drive through a citrus grove. There are no citrus groves in Kansas.
(at around 2h) According to the movie Atropine should be injected directly into one's heart to neutralize the effects of VX poison gas. When Goodspeed injects himself with the Atropine he injects the needle in a spot too low to be his heart. It is more like he was injecting it into his stomach.
(at around 1h 45 mins) In the missile launch scene, the radar operator is asked for the heading and replies "one eight five degrees, south-south-east." 185 degrees is almost south-south-west (but not quite).
(at around 2h 10 mins) Mason was captured in 1962 after hiding the microfilm. At the end of the movie Goodspeed, while viewing the microfilm, asks if his girlfriend wants to know who killed John F. Kennedy, which occurred in Nov 1963. Though this might be an anachronism, it's also possible that the FBI had evidence of the assassination plot prior to the actual event, and that is part of the information Mason stole. This would fit into the plot device of having the microfilm contain all of the FBI's cover-ups.
(at around 11 mins) The scientists outside the gas chamber shout at the men inside to inject themselves "before your suits melt." Atropine is toxic if taken when exposure to a nerve agent has not actually taken place - taking it before the suits have melted would incapacitate the agents, but the suits were clearly breached when the scientists said otherwise. In addition, when Goodspeed takes the atropine at the film's climax, he is clearly weakened and only barely able to light the flares to recall the bombing.
(at around 1h 55 mins) It appears that Goodspeed leaps to catch the rolling VX in his right hand, catches it in his left, then has it in his right again, but close examination reveals he quickly pushes the ball from one hand to the other.
At the end Goodspeed puts a glass sphere in the pocket on his chest. We do not see any measures taken to prevent it from breaking. But in the fight afterward we clearly see Goodspeed land on his chest. The same glass later breaks quite easily in the mouth of the terrorist. The same glass was shown (in the scene where Hummel's troops break into the weapons bunker to steal the missiles early in the movie) breaking quite easily from just rolling across the floor and hitting the wall!