Army Sgt. Kendrick Cantwell, right, Spc. Aiden Fredrick, center, and Pvt. Andrew Wilson render a salute after placing American flags in front of headstones during “Flags In” at Arlington National Cemetery in Arlington, Va., May 24, 2018. Cantwell, Fredrick, and Wilson are infantrymen assigned to Company A, 4th Battalion, 3rd U.S. Infantry Regiment, known as “The Old Guard.” DoD photo by Sebastian J. Sciotti Jr.