Some recruting offices have programs were all the pooles gather 1,2,3 times a week depending on your station, and they PT together, if not train by yourself. the minimum you have to do to begin boot camp is 2 pull ups, or chin ups, doesnt matter which, 45 crunches in 2 minutes and run 1.5 miles like in 13 minutes( dont remember the time , might be 15 minutes) but at least 13 ... if u have a problem making this then you will go to PCP or physical conditioning program where u are stuck in limbo and treated like crap until u meet the minimum requirements.
Good luck