The Pentagon announced it will speed up its delivery of Patriot missiles and M1 Abrams tanks to Ukraine, opting to send a refurbished older model that can be ready faster and reach Ukrainian troops fighting Russia’s invasion force by this fall.

The original plan was to send Ukraine 31 of the newer M1A2 Abrams, which could have taken a year or two to build and ship. But Defense Secretary Lloyd Austin has approved new plans to send the older M1A1 version from Army stocks, which will be easier for Ukrainian forces to learn to use and maintain as they fight Russia’s invasion.

The U.S. will refurbish excess M1 hulls and ship them as the M1A1 SA variant, outfitting the 70-ton behemoths with 120mm cannons and 50-caliber machine guns.