2018 Air Force Defender Challenge competitors attend

2018 Air Force Defender Challenge competitors attend orientation sessions at Joint Base San Antonio-Camp Bullis, Texas, Sept. 10, 2018. Fourteen Security Forces teams from U.S. Air Force major commands, United Kingdom and Germany test their skills in realistic weapons scenarios, simulated dismounted operations and grueling combat endurance events as part of Defender Challenge. The team with the most combined points wins the coveted Defender Challenge Championship Trophy.