Hey Jay....I'm a former Marine and I know for a fact that in times of great need for people to enlist (like now for instance) that recruiters have the ability to get ALL KINDS of waivers...from weight waivers to drug waivers if someone admits they had used in the past (usually a drug waiver puts a condition on your enlistment that if you fail a whiz quiz you'll be more severely punished than someone who had never used). My recruiter told me that you can admit to having smoked MJ...but like not more than 3 times or some stupid shit like that (sounds like Clinton's "But I didn't inhale"). I hadn't started token yet, so I wasn't in any danger....I do know there are some loopholes. Sort of depends on how straight laced your recruiter is. Also, I don't know about the Navy, but in the Marine Corps (which is under the Dept. of the Navy), we had this bullshit scare tactic the first few days of bootcamp called "The Moment of Truth" where they put you in the huge ass room with a giant screen and tell you, "If you've done ANY of these things and haven't been honest w/your recruiter...this is your last chance to come clean before being held fully accountable under the United States Code of Military Justice...and drug use was listed" They also said they'd be doing extensive background checks on all of us (which I question to this day...I mean really.....they have THAT much fuckin time on their hands when we're tryin to keep folks ALIVE!). All of this to say if you can't for some reason put off the process and feel you won't pass....you may want to consider having a chat w/your recruiter who may have some power to help you out. Remember...they have quotas to meet, so if you fail a piss test and don't make it in...it makes them look like dumbasses. I agree w/all....once in...just DON'T smoke. It's not worth it....you are officially "Government Property." Good luck bro and keep your fuckin head down!