ARLINGTON, VA - MAY 25: Sgt. Iwona Kosmaczewska (L) and Pvt. 2 Wesley Defee (R), members of the 3rd U.S. Infantry Regiment, place flags at the headstones of U.S. military personnel buried at Arlington National Cemetery, in preparation for Memorial Day May 25, 2017 in Arlington, Virginia. 'Flags-In' has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an Army's official ceremonial unit in 1948Ê. (Photo by Win McNamee/Getty Images)
