U.S. Army Spc. Kristopher Overstreet with Charlie Company, 3rd Battalion, 509th Infantry, 4th Brigade Combat Team, 25th Infantry Division, performs lunges as he completes the 12-mile foot march during the Expert Infantry Badge qualification, at Joint Base Elmendorf-Richardson, Alaska, April 26, 2013 (U.S. Army photo by Sgt. Eric-James Estrada/Released)