Corrected entry: At the end of the movie when the cadets finally give up, David Shawn shoots Colonel Kerby in the upper chest with a M-16 type rifle, but Kerby lives, gets up and runs in the building later. It is assumed that he was wearing a Kevlar vest. This cannot possibly happen because that type of rifle shoots a high velocity .223 caliber bullet that would penetrate any kind of protective vest. Bulletproof vests are only able to stop a lower velocity handgun round.
Corrected entry: When Gen. Besh is seen preparing for the Ball, he is shown holstering his pistol. (A Presentation model .45) The hammer of the pistol is visible and uncocked. Later in the fight scene when the kid jumps on the General's back and pulls the pistol he is able to fire it without cocking the pistol. Pistols of this type are single action on the first shot, in order to fire you must 1. Chamber a round or 2. Pull the hammer back with your thumb. The boys' hands are visible from the time he draws till he fires and he does neither.
Corrected entry: When Major Moreland walks into the armory, he is informed that because of the shooting, the local sheriff has ordered the confiscation of all arms on school property. This is a violation of both the 4th amendment (no person shall be deprived of life, liberty or property w/out due process of law) and the 2nd amendment (the right of the people to keep and bear arms shall not be infringed) of the U.S. Constitution. The local sheriff would not have had the authority to issue such an order.
Corrected entry: The "Warning Keep Out" signs are on the inside of the armory doors, as is the padlock.