US Air Force Airmen First Class Louis Figueroa responds to a simulated medical emergency, with first aid treatment to SENIOR AIRMAN Angelic Biehk, who is acting out the pain and trauma, during Exercise DEFENDER CHALLENGE 2000 at Lackland AFB, Texas. This competition showcases the talents and capabilities of 13 international Security Forces teams in seven physical fitness events, base defense, and policing skills over a period of six days