Plot hole: At the end, when Nick is on the roof and everyone is behind the metal doors, you hear the saws trying cut through the door and the sparks flying. Immediately when they cut through, the doors swing open and everyone is standing right up front with Champagne glasses. No one is holding any saws or equipment or have any in front of them. Nor was there any time for the people cutting the doors to run to the back to hide behind everyone else since the sparks fly right up until the doors swing wide open. (01:53:40)
Suggested correction: There's enough time from when the last lock is cut for Christine to shout "He's got a gun, get away from the door." I counted about 7 seconds before the doors opened. Plenty of time for people with cutting equipment to take a few steps out of the way.
