Best Military Security Forces?

[tripp]

I'm a senior in highschool right now and know i want to work in law enforcement (either work my way up as a detective in a police department, or work in federal law enforcement such as the FBI). I plan on majoring in Criminal Justice and joining the military as an officer when i graduate.

What would be the best branch of military for me to join, and what would be the best position in the military for when i'm out and am getting a civillian job.

I was considering Air Force Security Forces Officer?

[iomar]

Marines