LCDR Farrell wears the rifle and pistol marksman ribbons, but when he's wearing his dress uniform, he wears the medals for expert rifle and expert pistol. Either he's an expert with a rifle and a pistol and he is incorrectly wearing the rifle and pistol ribbon without the "E" device on each ribbon or he's a rifle and pistol marksman who shouldn't be wearing the rifle and pistol medals on his dress uniform.
Farrell is wearing the Navy Cross medal at the inauguration party, and wearing the ribbon for the Navy Cross medal when he gets out of the cab at the airport on his way to his deployment. So he has the Navy Cross before he was awarded it. It may also be said that he appears to have received it twice, but no gold star (one attached gold star equals second award) is attached to his ribbon and the newspaper article doesn't reflect the second award.
During the opening flyover of the Pentagon, both North and South parking lots are relatively empty; during the closing flyover, both lots are full though only a few minutes of interrogation time have passed.
In the initial scene when Gene Hackman is having lunch, reading the article about Costner's heroism, the Jefferson Memorial and Washington Monument are very close behind him. When the camera pans back to Hackman these monuments appear much farther away.
After stealing the car from the Pentagon garage and leaving it to chase down the two contras, LCDR Farrell appears on the Whitehurst Freeway in D.C. heading east, as the Key Bridge connecting Rosslyn, Virginia and Georgetown is clearly seen in the background. However, by driving East on the Whitehurst Freeway, LCDR Farrell and the two contras are heading back towards the Pentagon, not away from it.
At the inauguration party, the band sounds three "Ruffles and Flourishes" and then "Hail to the Chief" for the departure of the President. The President should receive four "Ruffles and Flourishes" prior to "Hail to the Chief", and both are sounded only at his entrance, not his departure.
While on the ships bridge the crew is wearing caps that identify the ship as "BB 1649", later identified as the Billings. "BB" would be a battleship, far larger than the ship shown. Battleships were always name for states, not cities.
Near the end, Brice tells Pritchard to give him the gun and that he'll do everything he can to help him out. Brice's hands are on Pritchard's neck and shoulders during this scene. When Brice takes his hands away, you can see there is nothing on Pritchard's shirt collar yet a moment later, you can clearly see a blood stain there.
The newspaper that describes Lt. Commander Thomas Farrell's 'heroic' rescue of a fellow seaman contains the sentence "A suggestion that public hearings on applications be limited to one every six months was taken under advisement by the commission" three times in the previous article.