they can pick anyone can do a job better then police,careful and prudent measures set.
Notorious
there are actual no spy schools but there is the pentagon FBI and the cia
Master Spy: The Robert Hanssen Story
If you mean the CIA or FBI, neither is better. They have different missions, but often collaborate in areas of common interest.
FBI agent a spy
FBI CIA IRS
In the army, you can. You may also work for the FBI or any countries intelligence.
Notorious
All FBI agents are required to be US Citizens.
One for inside the nation, FBI, and one for outside the US, CIA.
Yes. But it obviously cant be an AK-47 or an UZI.
JAIL