U.S. Air Force Airmen from the 633rd Security Forces Squadron participate in the 1st Defender’s Challenge during Joint Base Langley-Eustis’ Police Week, at Langley Air Force Base, Va., May 12, 2015. The goal of the Defender’s Challenge was to encourage participants to never give up and persevere through tough challenges. (U.S. Air Force photo by Senior Airman Breonna Veal/Released)