Continuity mistake: As Admiral Wilson on the Pegasus base fires his weapon on the glass window that protects the Navigation A.I. it doesn't gets a scratch. In the next shot he starts to hit the glass with the rifle's stock and a large grey stain have appeared on the glass, only to have vanished next time the glass is shown.
Other mistake: The chain "securing" the lock on the boarded up "Metro Christian Shelter" is in some inexplicable way on both sides of a 4" board that is taut between two other parallel boards. However, when the men are using the bolt cutter, the right side of the chain extends from a hole in the middle board, and the left side goes around the side of that same board and then around a pipe that is not originally there. The board that is to the left is missing. (00:17:17)