1.   Breathing becomes slower, then more shallow and finally the shooter holds about half a breath and squeezes the trigger.

2.   He held the piece up and sighted it, squeezing the trigger, allowing the hammer to fall on an empty chamber.

3.   He snapped off a shot, hardly even bothering to point the gun before he squeezed the trigger.

4.   He squeezed the trigger and the echo of the shot blasted all around the stairwell.

5.   He squeezed the trigger, but nothing happened.

6.   He took aim and squeezed the trigger.

7.   I cocked the old gun and squeezed the trigger, and it just went forward too slowly to fire a round.

8.   I squeeze the trigger, recoil, smell the metallic smoke, hear the shotgun crack.

9.   Kate saw two young, surprised black eyes under heavy eyebrows as she gently squeezed the trigger.

10.   Then, swallowing once, he shut his eyes and squeezed the trigger.