Feb. 10, 2023 U.S. Air Force, Army engineers prioritize interoperability to set INDOPACOM theater The 819th Rapid Engineer Deployable Heavy Operational Repair Squadron Engineers recently hosted U.S. Army Col. Jeffrey Hall, 555th Engineer Brigade commander, for an immersive tour of their facilities and mission brief on Malmstrom Air Force Base, Mont., Feb. 2, 2023.