Fire

Fire is an option in Completing the Mission during the "Little Nest Egg" and "Capital Gains" pathway. In both cases, it involves Henry Stickmin firing a shot from his tank while attacking the Toppat Train.

Little Nest Egg
Henry can shoot at the train as he approaches it, but his aim is way off and the shot misses the train by an absurd amount of distance. Henry facepalms himself in embarrassment. This results in a fail.

Fail Message
That cannon is angled up SO FAR.

Capital Gains
Henry fires a shot, seemingly at Fred Worst (who had attacked the tank with a sword-firing gun), and misses. However, as Fred mocks Henry for his poor aim, it's revealed Henry was actually aiming at the tunnel entrance behind Fred. The shot had caused the tunnel to collapse, which in turn causes the train to derail so Henry and Ellie Rose can rob it.