Targeting from a laying position, US Air Force STAFF Sergeant Jamie Newman, representative for Air Mobility Command, prepares to fire on targets downrange, during the Combat Rifle event at Exercise DEFENDER CHALLENGE 2000 at Lackland Air Force Base, Texas, on October 31st, 2000. DEFENDER CHALLENGE is the annual Air Force competition sponsored by Air Force Security Forces. This competition showcases the talents and capabilities of 13 international Security Forces teams in seven physical fitness events, base defense and policing skills over six days