Continuity mistake: Near the end of the film, when the SEALs are in the inflatable boats heading towards the coast of Beirut, there is a shot from behind showing all the SEALs wearing black diving suits. But when the shot changes to a close up of their faces, you can see they are wearing camouflage fatigues, not diving suits.
Revealing mistake: When we see the navy seals burst into the factory to rescue the pilots, several of the bad guys get shot. On one of the bad guy's feet who falls back onto a table, there is a rope attached to his foot obviously so he wouldn't fall to far, or not to hurt himself or something. (00:09:50)The-Immortal