Character mistake: When Frank is starting to show Amy how to take the gun from him he removes the magazine and makes the statement "clip empty" - any Marine, certainly one as well trained as him would never refer to that as a "clip" - it is a magazine. A "clip" is a device intended to help rapidly load ammunition into a magazine.
Character mistake: The team is using names of cities in Puerto Rico to show progress on their mission. Condado and Arecibo are misspelled. (00:04:00)