I did active duty in the Navy, then I wised up and switched to Air Force for reserve duty. I spent some time at GITMO as well, not my favorite place. When we did a unit eval (USAF) down in Belle Chase one summer, we did have 4 casualties in one day after extended periods in MOPP gear. They were just pass-outs from being dehydrated, nothing serious. There is no way you can drink enough water to stay hydrated for very long in that hot, humid environment.