Cornerstone Defense supports the Intelligence, Defense and Healthcare communities of the US Government. Headquartered in Hanover, MD and Herndon, VA. Cornerstone specializes in Cloud Architecture, Systems and Network Engineering, Systems and Networks Security, and Application Development. Cornerstone's advanced capabilities in service delivery begins with its employees. By hiring and maintaining the best employees, we are able to assist our Government and integrator community clientele with the ability to deliver new and cutting edge capabilities that supports Mission Critical objectives.