Air Force F-35's number AF-1 and AF-2 arrive at Edwards Air Force Base, Calif., for test and evaluation in May 2005. Under its preferred alternative basing plan, the Air Force would start basing F-35s in 2013 at Hill AFB, Utah, and Luke AFB, Ariz., where Air Force Reserve Command has associate units with Regular Air Force wings. (Lockheed Martin file photo/Tom Reynolds)