f35jetThe Pentagon’s fighter jet F-35 may not be fully operational until 2019 due to a newly discovered computer glitch. The $400 billion ultra-sophisticated jet, the most expensive in US history, was expected to enter service in 2015. F-35 is the fifth generation combat aircraft which is designed in three variations for US Air Force, Navy and Marines to replace out of date aircraft. It was planned to join the Marines in 2015 and Air Force in 2016. It is planned to replace the Air Force’s A-10 Warthog ground attack plane and Lockheed F-16 multirole fighter, the Navy instead of Boeing F/A-18 Hornet carrier-based fighter, and the Marines instead of Boeing AV-8B Harrier II jump-jet. However, the most awaited plane’s main weapon will not be able to fire due to a computer glitch. The four-barreled rotary cannon for the Air Force version of the F-35 cannot function until new software is elaborated, despite jet scheduled to join the army this year. More