President Barack Obama, on steps, returns a salute to U.S. Air Force Col. Marshall C. Collins, the commander of the 145th Airlift Wing, North Carolina Air National Guard, and Chief Master Sgt. Maurice Williams, the command chief of the airlift wing, upon arriving at the North Carolina Air National Guard base at Charlotte Douglas International Airport in Charlotte, N.C., Aug. 26, 2014. Obama visited Charlotte to deliver remarks during the 96th American Legion National Convention about issues affecting U.S. military veterans.