As a team, Royal Air Force Regiment's Corporal Spencer Rockett (front) takes direction from Corporal Mark Holyday (back) on where to fire his M60 and check if target has been hit during the combat weapons competition of DEFENDER CHALLENGE 2000 at Camp Bullis, Texas. 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