Military personnel received training to operate the ACES Lite printing system and completed construction of one of the first ever 3D printed concrete buildings at Camp Atterbury, Indiana, in July through August 2023 (top) and a second printed B-hut in Champaign, Illinois, in July 2018 (bottom). The concrete construction offers a B-Hut that is more structurally sound than those traditionally made from plywood. (Photos by Megan Kreiger, USACE-ERDC-CERL)