You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[EX Q]: Category: AUTHORS 
Clue: He died in 1995, the day before the opening of a Glasgow veterinary library named for him
[EX A]: james herriot

[EX Q]: Category: INVENTORS & INVENTION 
Clue: In April 2008, a man successfully completed a jump using a parachute designed by this man 523 years before
[EX A]: leonardo da vinci

[EX Q]: Category: THE U.S. MILITARY 
Clue: This branch uses more fuel than the rest of the military combined
[EX A]:
the air force