The United States Department of Defense (DoD) Cyber Range is a realistic simulation and modeling network environment, used to safely test capabilities and train military personnel on how to prevent and defend against network intrusions. The DoD Cyber Range has been operating in Stafford, Virginia since October 2009. ManTech International is the civilian contractor agency that designed, engineered, built, and operates the DoD Cyber Range. Last year, the ManTech team managed over 125 separate customer events (IT projects) at the Cyber Range.