The administration of U.S. President Joe Biden announced Tuesday that it was sending up to $300 million in weapons to Ukraine, the first new aid package for the country since funding ran out in late December.

The package, pulled together from money that army accountants cobbled from savings from contracts that came in under bid, includes air defense interceptors, artillery rounds and armor systems, senior defense officials said. Two U.S. officials said the package also includes an older version of the army’s longer-range missile systems known as ATACMS, which can travel 100 miles.

It is a stopgap measure at best, the officials said, but Ukraine is in dire need of air defense systems in particular, as Russia has continued its bombardment of towns particularly in the east.