The Pentagon stopped accepting deliveries of the newest F-35 Joint Strike Fighters in summer 2023 as software problems snarled the jets' latest upgrades.
The new package is made possible by savings the department found in other contracts but isn't a reliable tool to fund Ukraine going forward, officials say.
The Navy cut a submarine from its spending plan, but is pouring billions of dollars into supporting suppliers and helping increase their production rates.
Air Force Secretary Frank Kendall said he's worried funding constraints are keeping the service from transitioning quickly to more resilient space systems.