How do spies become spies?

Question

ok im not talking about the CIA of FBI i am talking about real international spies that work for the United States, im talkin about the spy that tracks, captures, kills, and uses explosives.

Answer 1

The FBI and CIA recruits "spies" at job fairs at colleges.

Answer 2

spies become spies by spying.

Answer 3

if i tell you i got to kill you

good luck

Answer 4

contact 'No Such Agency' .

Answer 5

Um, the CIA recruits them

Answer 6

Years and years of peeking and sneaking