I have climbed a 150' - 200' wall with climbing gear. I rappelled that same distance. One time I traveled through the air about 100' below a helicopter while in flight. The damn thing dunked me and three friends into the Chattahoochee River in the process. I've also flown on 16 helicopters, on the inside of the aircraft this time. Most of the time the doors were open and my head was forced toward the outside of the aircraft. Only once were the doors closed; winter time.