Updated: 15:30 – The number of dead has risen to at least twelve. One shooter is dead and one may be still at large.
Updated 13:02 – The Washington Post is reporting that as many as three gunmen opened fire this morning at the Naval Sea Systems Command in the Washington Navy Yard killing at least nine.  From the Washington Post: “At least nine people are dead after as many as three shooters dressed in military style uniforms opened fire a rampage at the Washington Navy Yard on Monday, police said, spreading fear and chaos across the region as authorities tried to contain the incident.  D.C. Police Chief Cathy Lanier said in a mid-day news conference that one of the suspected shooters is dead, while authorities are looking for two other possible suspects wearing military style clothing.”  The Navy Yard is about 1.5 miles from the U.S. Capitol and 4.5 miles from the Pentagon.  The Washington Navy Yard is the oldest shore establishment of the U.S. Navy, established in 1799.