For me it was riding in the back of a Huey with 3 other guys each holding a 70 to 90 pound patrol dog between their knees while the pilot took a 90 degree vertical turn at about 250 feet. It might not have been 90 degrees but the dogs weren't strapped in and I swear when I looked through the door all I could see was the ground, no horizon. It was training though. I'm a Veteran of the Peace 1977-1981 USAF. The Live Fire march wasn't even close, never mind having large dogs with sharp teeth chase you and bite your arm while wearing a leather and burlap sleeve.