BREAKING NEWS D.C. Navy Yard Shooting Multiple Deaths and Several Injuries

This afternoon in Washington multiple people were killed and several others wounded when a gunman opened fire at a Navy Systems Command headquarters.

The first news broke with the Navy reporting on its Twitter feed that there was an "active shooter" at Building 197 at the Navy Yard, and that three shots had been fired at 8:20 a.m.

The Navy said several individuals were killed at the Navy yard.  The public affairs chief for the Navy Installations Command, Ed Buclatin sent out the following tweet, "4 killed and eight injured." He also confirmed that it is unclear if there was more than one shooter.

Janis Orlowsky, chief medical officer at MedStar Washington Hospital Center, said the hospital was treating three victims; a D.C. male police officer and two women.

She said the police officer had multiple gunshot wounds to his legs and was in surgery. One woman was shot in the shoulder, and the other in the head and hand. All are expected to survive, she said.

The hospital has been told to expect additional victims, Orlowsky said. "We're pretty darned experienced at this."

Several civilians who were in the area explained what they had witnessed.

Rick Mason, a program management analyst for the Navy, said he was at the Navy Yard when a gunman began shooting from a fourth-floor overlook in the hallway outside his office. He said the gunman was aiming down at people in the building's cafeteria on the first floor. Mason said he could hear the shots but could not see a gunman.

Patricia Ward, a logistics management specialist, said she was in the cafeteria. "I heard three shots, pow, pow, pow. Thirty seconds later I heard four more shots. A lot of people were just panicking. There were no screams or anything because we were in shock."

Check out the video footage down below. Stay tuned for more news and updates as the story develops.