Published May 25, 2017 at 3:45 PM | Updated at 7:48 PM EDT on May 25, 2017
Members of the 3rd U.S. Infantry Regiment were at Arlington National Cemetery on Thursday, placing flags at the headstones of U.S. military personnel buried at the cemetery. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an official ceremonial unit of the Army in 1948. (Photo by Win McNamee/Getty Images)
