Capt. David Bullock, 736th Security Forces Squadron, cools off in the ocean after completing the Warrior Challenge, a physical endurance course that exhausted first responders for nearly 4 hours, May 16, 2012 at Andersen Air Force Base, Guam. Andersen held the challenge in support of National Police Week. (U.S. Air Force photo by Senior Airman Benjamin Wiseman/Released)