Arlington 'Flags In' tribute begins Memorial Day commemoration
Airman Jacob Proffer, a member of the Air Force Honor Guard, pauses to salute a grave after placing a miniature flag at its base during the "Flags In" tribute at Arlington National Cemetery, Va., May 21. "When I do this, it makes me take a lot more pride every time I put on my uniform, seeing the measure of sacrifice so many have made," he said. (Department of Defense photo/Donna Miles)