Almost Ready for War: F-35 Joint Strike Fighter Has Flown 100,000 Hours

Almost Ready for War: F-35 Joint Strike Fighter Has Flown 100,000 Hours The Pentagon’s F-35 Joint Strike Fighter fleet has accumulated over 100,000 flight hours as development of the stealthy new fighter approaches the finish line. Contractor Lockheed Martin expects that it will complete development work on the full Block 3F configuration by the end of the year. Delivering the full Block 3F would complete the requirements set forth under the System Development and Demonstration (SDD) contract that was originally awarded to Lockheed in 2001.