U.S. Air Force Col. Roger E. Williams Jr., 145th Airlift Wing commander greets President Barack Obama as he arrives at the North Carolina Air National Guard base, Charlotte Douglas Intl. Airport Thursday, June 6, 2013. As part of his "Middle Class Jobs & Opportunity Tour," the President traveled to Mooresville Middle School in Mooresville, N.C., to deliver remarks and see firsthand the school's cutting edge technology and digital learning curriculum. (U.S. Air National Guard photo by Tech. Sgt. Patricia Findley/Released)