 FACT: SPOILER: When Erin shoots the Captain in the ear at the end of  the movie, she fires one round and then the gun clicks several times  as she pulls the trigger. With that firearm, the Beretta 92F, the  slide would be held open after the final round was fired to  facilitate reloading. Had there been only "one round in the chamber"  as the captain said, the trigger would not have clicked like it did  because the slide would have been locked to the rear.