At the start, Phillippe is using a Nikon camera, yet after he's killed, all of his equipment looks like Canon equipment.
When the assassin is gathering pieces of the rifle from the men's room, the case he's putting them into is a brief case. When he's later shown walking and in the sound booth, the case is a satchel.
During the first meeting between Tobin and Sylvia at the U.N. when he says he's not there to protect her, her hair keeps changing. In some shots, it's over her eye, and in some shots it frames her face. She is never seen moving it with her hand.
Keller is pointedly prevented from entering the UN precinct without an escort, but later one of the Secret service agents pass through, and triggers, an entry sensor just after waving their identification badge.
In an early scene agent Keller (Sean Penn) is shown with a glass on a bar. The glass has about an inch of booze in it. Scene cuts to him removing his wedding ring and putting it in the glass... which is now empty.
Tobin claims that Silvia was born in the United States and raised in Matobo, therefore, she is a natural born United States citizen. At the end, when she is talking with Tobin about her future steps, she says she has been deported and given one day to leave the country. As she is a US citizen, she could not be "deported".
Dot is wearing her down and long. Both are basic violations of Secret Service as well law enforcement protocol. This is because her hair could be grabbed by a suspect and used to control or injure her. It would be worn up in a manner that impairs or prevents that from occurring,
The Secret Service would not handle an attempted political assassination at United Nations and provide security. That would be the jurisdiction of the State Department's Diplomatic Security Service (DSS).
When a visitor re-enters a secure facility like the United Nations after hours on an unscheduled visit, they are always escorted and the visit is logged in. The facility wouldn't be secure if this didn't occur.
Throughout the film, Keller is shown wearing a gold shield badge on his belt. The U.S. Secret Service badge is a gold five-point star and is normally kept attached to the leather credential case rather than worn on a belt as local police will do.
When trying to find out who the assassin had called at 3.30pm, they look down the phone bill and point to 03.30hrs, which is 3.30am.
Tobin receives the photo with the names on the back from a fax machine. The printer that prints the picture is a bubble jet printer which cannot print two sides of a picture at once.
Action takes place during the UN General Assembly meeting. This annual meeting occurs in September, but cherry blossom trees are in full bloom which occurs only in the spring.
The children in the arena are shown shooting AK-47s. This is a .30 weapon which is both relatively heavy and which has significant recoil. The children are shown handling the weapons and firing them with no problem , which given their sizes, would not be possible.
(at around 15 mins) As the helicopter is taking off, Woods gets a call that, she claims, informs her that Zuwani's head of security has arrived. In fact, what she hears on the line is the Israeli national telephone company's recording: "Hamispar sh'higata, lo poel tmani." In English: "The number you have dialed is temporarily unavailable."
When Silvia plays her flute, her finger movements do not match the flute notes that are heard.
When Tobin is telling Sylvia that his wife died two weeks ago, a light from a camera can be seen reflecting off the picture next to him.
Agent says to Tobin over the radio, "She's booked 9 a.m. out of JFK. I'm on the LIE (Long Island Expressway), almost there." JFK International Airport is nowhere near the Long Island Expressway; it's at the southern end of the Van Wyck Expressway, just south of the point where the Cross-Island, or Southern State becomes the Belt Parkway.
When Tobin reads Phillipe's letter to Silvia, it says "...a young boy shot Simon." Phillipe could not have known who shot him. While he heard the gunshot, he he remained in the car outside the stadium.
The building where Simon Broome is shot, the Monumental, is a bullfighting ring, a remnant of Mozambique's Portuguese era. At the end, as Silvia reads from her brother's list, she calls it a soccer stadium.
The newspaper article spells the name Kuman Kuman in two words. The correct spelling is Kuman-Kuman, as one of the Secret Service agents points out.
When Tobin was revealing to Silvia that he knew about the e-mail she sent to Philippe, Tobin said "write me", but the e-mail really said "call me".