(Washington, DC) -- The Navy confirms several injuries in a shooting at the massive U.S. Navy Yard in Washington, DC. Thousands of people who work at the sweeping facility are sheltering in place as police scour the area for a male gunman. The shooting occurred at the facility's Naval Sea Systems Commmand headquarters. There is a massive law enforcement response including Washington, DC Police and FBI. A wide area around the base has been cordoned off in southeast Washington.