Astrion Group (also known as Engineering Research and Consulting, ERC) is a company that provides technology solutions for defense, homeland security, intelligence, and space missions. It offers systems risk and vulnerability assessment, unmanned aerial systems (UAS) operations and maintenance, ordnance and munition management, rocket motor design, marine equipment engineering, test and evaluation services, as well as IT support, network administration, cybersecurity training, etc. ERC merged with Oasis Systems to form Astrion.