Active duty Marines and Sailors and their veteran predecessors of 2nd Battalion, 1st Marine Regiment bow their heads in silence during the benediction portion of a ceremony Nov. 6, 2015, aboard Marine Corps Base Camp Pendleton, Calif., honoring members of their regiment who gave their lives during the Vietnam War. During the ceremony, plaques bearing the names of the fallen were dedicated in their honor at the Camp Horno Memorial Garden. (U.S. Marine Corps photo by Lance Cpl. Alvin Pujols)