''Geronimo'' is a
United States Army airborne exclamation
An exclamation is an emphatic utterance, the articulate expression of an affect.
Exclamation may also refer to:
* Exclamation mark, the punctuation mark "!"
* Exclamation, an emphatic interjection
* Exclamation, a statement against penal interest ...
occasionally used by jumping
paratroopers
A paratrooper is a military parachutist—someone trained to parachute into a military operation, and usually functioning as part of an airborne force. Military parachutists (troops) and parachutes were first used on a large scale during World ...
or, more generally, anyone about to jump from a great height, or as a general exclamation of