The delivery of Technology Refresh 3-equipped F-35 Joint Strike Fighters may not begin until June, accounting for an even further slip in the hardware and software upgrade's schedule. Executives with contractor Lockheed Martin had repeatedly said deliveries would begin in December, but in a Securities and Exchange Commission filing Wednesday, first reported by Bloomberg , the company updated the calendar for first delivery sometime between April and June 2024. The delays will cost about $7 million per aircraft, Lockheed...