Police say 13 people, including the gunman, Aaron Alexis, are dead after a shooting at Washington Navy Yard on Monday morning. We are told an officer was shot twice in the leg and taken to MedStar. The U.S. Navy also tweeted that at least three shots were fired inside the Naval Sea Systems Command headquarters. The Navy says approximately 3,000 people work there. A police official says they received the report at 8:26 a.m. Monday.