The White House believes it’ll be able to fast-track some assistance to Ukraine before May 9, but it’s unlikely all US weapons in the package will be delivered by then, a senior administration official told NatSec Daily, Report informs via POLITICO.

“It depends on the capability. Some things are easier to transit and others,” said the official, granted anonymity to discuss internal deliberations. “Some aid, like artillery shells … will be going in, but other things may take some more time.”

For instance, ammunition for the High Mobility Artillery Rocket System can be sent relatively quickly because there aren’t huge quantities, while items like 155mm artillery could take longer after they arrive in Ukraine to get to the frontlines. Regardless, the White House doesn’t believe it’s a sure thing that Russia will be able to take Chasiv Yar in the near future.