Maj. William Knight flies the North American X-15A-2 to the unofficial absolute world speed record of Mach 6.72 (4,520 mph) over Edwards AFB, Calif.
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.