U.S. Marine Corps Master Sgt. Keith Martinez, Marine Corps Drum and Bugle Corps assistant drum major, conducts a performance during the sunset parade at the Marine Corps War Memorial, Arlington, Va., May 26, 2015. Since September 1956, marching and musical units from Marine Barracks Washington, D.C., have been paying tribute to those who's "uncommon valor was a common virtue" by presenting sunset parades in the shadow of the 32-foot high figures of the United States Marine Corps War Memorial. (U.S. Marine Corps photo by Lance Cpl. Kayla V. McTaw/Released)