U.S. Air Force Staff Sgt. Max Estrada, Travis Phoenix Spark lab noncommissioned officer in charge, holds a 3D-printed model of the Air Mobility Command emblem in the Phoenix Spark lab at Travis Air Force Base, California, Sept. 30, 2020. Travis’ Phoenix Spark lab is the base’s innovation hub, which works to find ways to decrease expenditures on the installation by substituting traditional items with 3D-printed counterparts. (U.S. Air Force photo by Senior Airman Amy Younger)