Audio problem: When inside Washington D.C. and the AH-64 is firing its gun, the sound is completely wrong. In the movie, it sounds like a laser gun, and in reality, it's a M230 chain gun, which sounds different.
Revealing mistake: When Jessie falls on her back in the breaking into the White House, you can see she is surrounded by complete bullets, perhaps blanks. One would expect the floor to be covered with used bullet cartridges. (01:35:00)
Lee: You are aware there's a really huge civil war going on everywhere?
Shop Assistant: We usually try to stay out of it. With everything that's been going on, it seems like it's for the best.