Astrion Group (also known as Engineering Research and Consulting, ERC) is an engineering, technical, IT, and scientific services company. Its capabilities include engineering oversight of acquisition programs, research and development, systems engineering, test and evaluation support, complex systems operation and maintenance, as well as IT, software support, and network administration. The company serves the US Department of Defense, NASA, and commercial clients. ERC merged with Oasis Systems to form Astrion.