$15k for some dude to get off on a sadistic power trip fantasy screaming at me?
Nah thanks, fam. I can give myself a good workout without a drill sergeant. If you want some difficult team building physical trials and tribulations I recommend either Spartan or Tough Mudder obstacle runs
Just as hard, a lot more fun, and 1% of the cost
https://m.youtube.com/watch?v=