President Donald Trump visits Arlington National Cemetery

President Donald Trump places a flag at a gravesite during the "Flags-In' ceremony ahead of Memorial Day at Arlington National Cemetery, in Arlington, Virginia on May 23, 2019. "Flags-In" is an annual event where the 3rd U.S. Infantry Regiment, "The Old Guard," places American flags at every gravesite at Arlington National Cemetery. Photo by Kevin Dietsch/UPI