the military & drug testing

you guys gave me some great resposes in my post about drug testing and getting clean...

I was wondering if anyone has any info/experience about going into the military and how they drug test. I will be going into the Navy, or possibly the Air Force. Im going this week to talk to recruiters and finding whats best for me and what Im looking for. Unfortunately the only thing in my life Im giving up, is marijuana.

Im just looking to see if anyone know exactly how they drug test, urine, hair, etc..Im sure they do...just very curios to know more...thanks.