Wiktionary
hooyah
interj. (context US military English) Official battle yell of the US navy
Wikipedia
Hooyah
Hooyah is a word used in the United States Navy to build morale and signify verbal acknowledgment.
Call: "Our command just won the competitive arms event! Hooyah! GO NAVY!"
Usage examples of "hooyah".
Now, all of you, give me one great big fucking hooyah, or I'm walking out the door!