ERC Incorporated primarily services the United States Army, Air Force, Department of Energy, Department of Defense and NASA. Specifically for these clients, ERC provides: engineering and management services; research and development; test and evaluation support; analysis, design, development and testing for next generation space propulsion systems and deep space propulsion concepts; information technology based projects; and modeling and simulation projects. The company also services federal and local government, private sector and commercial companies as a design/build contractor, providing industrial/heavy commercial engineering, procurement and construction services. ERC has headquarters in Huntsville, Ala., and additional locations in Decatur, Ala., Washington, D.C.; Denver; and California. The company was established in the 1970s.