Rocket Lab USA stock rallied in premarket trade Friday as the company said it’s won a U.S. government contract worth as much as $515 million. In a Securities and Exchange Commission filing, it said agreed to design, manufacture, deliver, and operate 18 space vehicles. The base amount of the contract is $489 million and incentives and options total $26 million, it said. Work under the agreement will begin immediately with launch slated for 2027, operation of the satellites through 2030, and an option to o ...