https://abc7.com/us-likely-to-send-long-range-atacms-missiles-to-ukraine-officials/13755229/

A surprising discovery could also ease the administration's choice to send the weapons: The U.S. has found it has more ATACMS in its inventory than originally assessed, the two officials told ABC News.

The serviceability of the rediscovered stockpile is not yet clear, nor which specific type of missiles it contains.