3-4 years back, F-35 program was deemed doomed. There were critical bugs being discovered almost daily and program cost rising. But things have changed for good since then. The F-35 Lightning II is coming into its own. A new contract for 478 aircraft has been signed by the manufacturer. The deal is worth $34 billion and is biggest to date. Importantly the cost has reduced considerably and now U.S Air Force will get the F-35A for $80 million apiece As per reports, the aircraft will be delivered in 3 lots.