Hey, it is by far the most difficult of all the services. Well, four out of five anyway. I was at Lackland AFB for a school and would laugh when I watched the baby Airmen running around a parking lot for PT. Or how the would have to stop, post road guards, march across the intersection, stop, recall road guards and march to the next intersection. Took two hours to get to the chow hall. Of course the food was good.
Glad you corrected yourself.
Marine Corps boot camp is considerably tougher.