At Edwards AFB, Calif., Grumman pilot Chuck Sewell makes the first flight of the X-29A forward-swept wing demonstrator. The X-29s, two of the most unusual aircraft ever built, are designed to prove the aerodynamic benefits of wings that appear to have been put on backwards.
The Pentagon awarded a contract worth over $2 billion for the next batch of F-35 engines to Pratt & Whitney on June 5. The deal for Lot 17 F135 engines, totaling $2.02 billion, is expected to be completed by December 2025.