Other mistake: Towards the end where they steal the chip, they are detected and about a million security guards are all running around, yet 30 seconds later, the only security guard is one man with a shotgun. What happened to their big army of security guards? (01:41:30 - 01:42:55)
Suggested correction: This isn't a mistake. Bishop had been directed to a part of the building where there weren't any security guards; this was shortly before one of the guards found their camera feed. The guy with the shotgun was the only person to head into that location. Unlikely maybe, but possible.
Other mistake: When Danny, Sam and Jo arrive on Guantanamo Bay Naval base, they are met by the driver who recommends they put on camouflage jackets so their dress whites won't be spotted by Cuban snipers distinguishing them as high ranking targets.They comply and as you see them drive away, right there on the top of their heads, bright white dress hats can be seen clear as day. While it's against regulations to remove hats outside, it's also against regulations to cover dress whites, so a half-assed measure is an odd choice.
Suggested correction: The white shirt with shoulder boards are proper for officers, and a sniper would recognize the target as one. White hats are worn both by marines and sailors of all ranks, and from a distance, the differences may be not so easy to spot.
Other mistake: Beth gives Nick his keys, saying he left his keys at her place, meaning they're his keys, but then she takes them with her, and those were the same keys she had in her pocket when she was shot.