Integration of Technology Refresh 3 -- the hardware and software upgrade for the F-35 Joint Strike Fighter -- is running another year behind schedule, officials told lawmakers this week. TR-3, which is needed for the Block 4 software upgrade, had been planned for integration into lot 15 aircraft in April, but House Armed Services tactical air and land forces subcommittee Chairman Rob Wittman (R-VA) said that timeline shifted to April 2024. “F-35 is currently planned to achieve full operational capability...