The Coast Guard captain of the port has established a temporary safety and security zone Monday in response to a report of a shooter at the Navy Yard in Washington, D.C. The safety and security zone will be in effect for an undetermined amount of time and will limit all navigation on the Anacostia River from Haines Point to the John Philip Sousa Bridge. Entering or operating in the security zone is prohibited unless authorized by the captain of the port of Baltimore. Vessels already at berth, mooring or anchor are not required to depart the security zone.