Ukrainian military has claimed the destruction of two small Russian patrol boats in the Black Sea. (May 2) AP
First F-35 to Achieve 1,000 Flight Hours
AF-2, nicknamed the 'Workhorse', is the second production F-35 Lightning II for the U.S. Air Force and the first F-35 to reach 1,000 flight hours. Every AF-2 flight-test hour continues to advance the F-35's Flight Sciences testing.