Lockheed Martin delivers 72 F-35 jets facing upgrade delays, Bloomberg News reports
(Reuters) -Lockheed Martin has delivered 72 F-35 jets to the U.S. government as of May 1, after several months of delay due to late software improvements, Bloomberg News reported on Monday, citing the Pentagon’s program office. The upgrade, known as Technology Refresh 3 (TR-3), aims to give the stealth fighter software and hardware improvements, including…