A U.S. Army Soldier, assigned to Delta Company, 3rd Battalion, 75th Ranger Regiment, walks towards the sunset after his mission at the National Training Center (NTC), Fort Irwin, Calif., Feb. 23, 2015. NTC is a major training area for the U.S. military to fully exercise their Mission Essential Task List that supports the Army's core competencies. (U.S. Army photo by Spc. Nelson Rodriguez/Released)