U.S. Air Force Master Sgt. Donald Stichter, 52nd Equipment Maintenance Squadron noncommissioned officer in charge of munitions inspection from Lakewood, Colo., smiles for a portrait, July 3, 2014, at Spangdahlem Air Base, Germany. To help train for the ING Luxmebourg Night Marathon, Stichter used all four pillars of comprehensive fitness: mental, physical, spiritual and social. (U.S. Air Force photo by Senior Airman Rusty Frank/Released)