US Air Force AIRMAN Scott J. Paneton, from the US Air Forces in Europe command, waits with an M16A2 rifle and a large amount of ammo to go to his position and compete in the combat weapons competition at Camp Bullis, Texas, during DEFENDER CHALLENGE 2000. Defender Challenge is the annual Air Force wide competition sponsored by Air Force Security Forces. This competition showcases the talents and capabilities of 13 international Security Forces teams in seven physical fitness, base defense and policing skills over six days