Oh the fond memories of being gased and the repelling tower. My favorite was the slide rope tower.in the Marine Corps boot camp we didn't have nets. It had water under it and yes they did tell us to come to attention coming down just so they would sadistically laugh while we fell into it. It is great your son is falling in line and knows it is just a head game they like to play. That is very important to keep the right frame of mind. Sounds like he is doing great!