Contractors from New South Construction work to renovate a 1940s era hangar on Robins Air Force Base, July 25. The 14.7 acre complex is the largest in the country and houses C-5 Galaxy, C-130s and F-15 aircraft. This is the first major renovation since the building was constructed in 1942. The seven-year, $75 million project is expected to be completed in 2021. Only one other similarly sized hangar complex exists at Hill Air Force Base near Ogden, Utah. The renovation includes the installation of fire alarms, fire suppression systems, a new roof, and lighting throughout the facility. Photo by Rashida Banks, U.S. Army Corps of Engineers Savannah District