Moving Equipment Several M777 towed 155 mm howitzer cannons wait to be sent from March Air Reserve Base, Calif., April 21, 2022. to assist with European support operations. The U.S. has committed more than $3.2 billion in security assistance to Ukraine . SHARE: Download: Full Size (2.43 MB) Tags: air force, partnerships, ukraine response Credit: Wendy Day, Air Force VIRIN: 220421-F-JY458-473.JPG Photo Gallery