Several U.S. Air Force F-35A Lightning II aircraft assigned to the 58th Fighter Squadron, 33rd Fighter Wing fly in formation following an aerial refueling qualification mission over Eglin Air Force Base, Fla., May 14, 2013.
The F-35 Integrated Training Center was established at Eglin and was responsible for conducting student pilot training and maintainer training for Airmen, Soldiers, Marines and Sailors. (DoD photo by Master Sgt. John R. Nimmo Sr., U.S. Air Force/Released). Original public domain image from Flickr