FORT WORTH, Texas - The Lockheed Martin F-35 Joint Strike Fighter flew supersonic for the first time this week, accelerating to Mach 1.05 - about 680 miles per hour. The test was done a full internal load of inert or "dummy" weapons on the one-hour flight. (Source: Lockheed Martin, 11/14/08). Eglin Air Force Base, Fla., will be the home of a Joint Strike Fighter training center.