Tech Sgt. Kenneth Bernardo, a member of Blackhawk Team, calls in a scenario using a radio as part of the obstacle course. The purpose of this excercise is to be able to establish radio communications with the command post. Other stations of training included disassembling M-16 rifles, high crawl with gas masks, low crawl, building defensive fighting posiiton barriers, grenade throwing, tactical movements and unexploded ordnance detection Sept. 4. (USAF photo by Senior Airman Renea Kleckner)