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Aaron Alexis

Aaron Alexis moves through the hallways of Building #197 carrying the Remington 870 shotgun. (credit: FBI)

Surveillance Video Shows Aaron Alexis On Navy Yard Rampage

The 30-second video pieces together surveillance video from the morning of Sept. 16 showing Alexis arriving at the secure Washington, D.C. scene in a rental car, walking into the building and then pulling out his shotgun.

09/25/2013

President Obama Attends Memorial For Victims Of Navy Yard Shooting

Obama Honors Navy Yard Victims At Memorial Service

President Barack Obama spokes Sunday at a memorial service honoring the 12 victims who were gunned down last week at the Washington Navy Yard by a New York-born gunman.

09/22/2013

A police officer checks the ID of a person entering the Washington Navy Yard September 17, 2013 in Washington, DC. (Photo by Drew Angerer/Getty Images)

Washington Navy Yard Reopens 3 Days After Massacre

The Navy installation re-opened at 6 a.m. Thursday. Navy spokeswoman Lt. Cmdr. Sarah Flaherty said Thursday will be a regular work day, except for Building 197, where the shootings occurred.

09/19/2013

Police stand guard outside the home of Cathleen Alexis, the mother of Washington Navy Yard shooter Aaron Alexis, on September 17, 2013 in New York City.  (Photo by Andrew Burton/Getty Images)

Sources: Aaron Alexis Etched Messages Into Shotgun

The gunman in Monday’s Washington Navy Yard massacre left behind two short phrases etched into the side of his shotgun, sources told CBS News.

09/18/2013

Aaron Alexis mug shot (credit: Fort Worth Police)

Navy Yard Gunman Was Hearing Voices, Sought Treatment For Mental Issues

Monday’s onslaught at a single building at the highly secure Navy Yard unfolded about 8:20 a.m. in the heart of the nation’s capital, less than four miles from the White House and two miles from the Capitol.

09/17/2013

People come out from a bulding with their hands up after a shooting happened at the Washington Navy Yard September 16, 2013 in Washington, DC. (Photo by Alex Wong/Getty Images)

Officials: 12 People Killed In Washington Navy Yard Shooting

At least one gunman opened fire inside a building at the Washington Navy Yard Monday morning and officials said at least 12 people were killed and several more wounded, including a law enforcement officer.

09/16/2013