Aircrew members with the 39th Airlift Squadron walk toward a C-130J Super Hercules aircraft on the flightline at Dyess Air Force Base, Texas, Dec. 9, 2020. The U.S. Army Engineering and Support Center, Huntsville, considered an expert in Energy Savings Performance Contracts for Department of Defense service branches, recently awarded an ESPC to upgrade to newer energy efficiency systems there saving the base more than $4.5 million annually.