Colonel Steven Shepro, Joint Base Andrews/316th Wing commander, uses a hydrant wrench to open the hydrant so water can flow to an engine while working with the 316th Civil Engineer Squadron firefighters for a day Feb. 23, 2010 at Joint Base Andrews, Md. Colonel Shepro and his Airman "shadow" for the day participated in a simulated structure fire with the fire department in an old housing unit. (U.S. Air Force photo by Airman 1st Class Perry Aston) (Released)