Defense Secretary Ash Carter says the U.S. will spread about 250 tanks, armored vehicles and other military equipment across six European nations to help reassure NATO allies facing an array of threats from Russia and terrorist groups.

Each set of equipment would be enough to equip a military company or battalion, and would go on at least a temporary basis to Bulgaria, Estonia, Germany, Latvia, Lithuania, Poland, and Romania. Carter said the equipment could be moved around the region for training and military exercises, and would include Bradley fighting vehicles and self-propelled howitzer artillery guns.

The move would allow NATO nations to more quickly respond to any military crisis in the region.