The Pentagon has signed a $34 billion contract with Lockheed Martin to purchase 478 F-35 Joint Strike Fighters over the next three production lots.

How the U.S. Air Force plans to build new combat aircraft like Apple makes the iPhone.

The Pentagon has awarded Lockheed Martin a contract modification worth more than $7 billion before finalizing a much larger bundle of contracts and agreements to buy more than 470 F-35s for delivery between 2020 and 2022, fulfilling the last three years of low-rate production.