Continuity: In one sequence (in which Ryback tries to save the drowning sailors), Ryback is running with two machine guns and kills a bunch of bad guys, including one guy with a moustache and cap who falls down a flight of stairs. After the machine guns are empty, he pulls out a pistol, slowly goes into another room and, surprise! the same guy appears, gets shot and falls down the stairs! Its obvious they ran out of guys to kill in the film, so they just ran the same film twice to look more violent.
