U.S. Army Engineer Research and Development Center (ERDC), Construction Engineering Research Laboratory (CERL), mechanical engineer and project lead for the Additive Construction Program and 3D Printing Megan Kreiger briefs the Principal Deputy Assistant Secretary of the Army for Installations, Energy and Environment Bryan Gossage at the ERDC Forward Operating Base-Laboratory, in Champaign, Ill., Oct. 30, 2020. Kreiger explained that the “chevron” design of the Barracks Hut construction is 2.5 times stronger than straight 3D printed concrete walls.