The final roll call
U.S. Air Force Tech Sgt. Brandon Viet, a member of the Nebraska Air National Guard’s 155th Air Refueling Wing, performs a ceremonious roll call during a memorial service for Senior Airman Dale Butler at the Nebraska National Guard air base in Lincoln, Neb., June 8, 2013. The memorial ceremony honored Butler who was killed in a civilian aircraft accident near Norfolk, Neb., April 27, 2013. (U.S. Air National Guard photo by Staff Sgt. James Lieth/Released)