Spartan Race 2010
CAMBRIDGE, England -- Col. Joseph DeMarco, 100th Operations Group commander, Chief Master Sgt. Christopher Powell, 100th Air Refueling Wing command chief, Col. Chad Manske, 100th Air Refueling Wing commander, and Lt. Col. Don Robertson, 100th Security Forces Squadron commander, pose for a quick group photo after enduring the water obstacle during the Spartan Race here Sept. 19. Participants pushed through 12 obstacles to complete the event. (U.S. Air Force photo/Staff Sgt. Jerry Fleshman)