U.S. Army Spc. Michelle Metzger, a motor transport operator with the 1487th Transportation Company, Ohio Army National Guard applies grease to her vehicle at Multinational Base Tarin Kot, Uruzgan province, Afghanistan, Aug. 12, 2013. Metzger, a mine resistant ambush protected vehicle driver, performs daily maintenance on the vehicle. (U.S. Army National Guard photo by Sgt. Jessi Ann McCormick/Released)