Specially trained unit did not respond to shooting which killed 12 in part due to concerns about threat to US Capitol
Aaron Alexis, who shot dead 12, was given secret-level security clearance despite omission from application form
With no suspect to interview and no pre-written note to examine, the FBI is determined to put together some kind of picture to explain the navy yard shooter's actions
Cathleen Alexis makes emotional statement and says she is glad her son is 'now in a place where he can no longer harm anyone'
Aaron Alexis, the suspect in Monday's Washington DC navy yard shootings, got through security with a valid pass, according to the FBI
Police name 12 victims of Monday attack as questions swirl over how Aaron Alexis, 34, managed to obtain security clearance
Bailey Childers: I live in Washington DC, yet I was struck by how normal the day was for many. We must remember the victims and demand change
Family, friends and colleagues have begun to mourn the dozen civilians killed yesterday and now identified by authorities
Dr Janis M Orlowski of MedStar Washington Hospital Center pleads with Americans to put her trauma center 'out of business'
Defense contractors said navy yard gunman's last check, in June, revealed no issues other than one minor traffic violation
Former resrvist Aaron Alexis worked as a subcontractor to the computer company after being discharged from navy in 2011
Capitol police report justifies CERT squad's recall from navy yard shooting
Specially trained unit did not respond to shooting which killed 12 in part due to concerns about threat to US Capitol