An aerial view of Fort Jefferson in the Dry Tortugas National Park, Fla., Jan. 17, 2013. Air Force reservists both active and retired from Homestead Air Reserve Base’s 482nd Civil Engineer Squadron gathered at Fort Jefferson over several days in January to participate in a maintenance project for the National Park Service. Fifteen active reservists, six retired reservists, and one civilian contractor set up shop at Fort Jefferson as a training mission. (U.S. Air Force photo/Ross Tweten)