Each pull of the trigger increased the odds.
SGT should have tackled, wrestled the gun from his or her hands.
Should have pulled his weapon and ordered them to stop.
Radio for backup.
Shot at the ceiling. Someone was going to die , so better to shoot them in the leg maybe?
The odds are exactly the same with every trigger pull. If you flip a coin and get heads five times in a row the odds of beads with the next clip are exactly the same as they were with the first one and all previous flips