An F-35B Lightning II joint strike fighter from the Marine Fighter Attack Training Squadron 501, Eglin Air Force Base, Fla., sits on the runway waiting for take off clearence for a local training mission over the Emerald Coast Sept. 18, 2012 while an Air Force F-15 Eagles prepares to land. - An F-35B Lightning II joint strike fighter from the Marine Fighter Attack Training Squadron 501, Eglin Air Force Base, Fla., sits on the runway waiting for take off clearence for a local training mission over the Emerald Coast Sept. 18, 2012 while an Air Force F-15 Eagles prepares to land.