Metropolitan Police Chief Cathy Lanier pauses as she listens to Assistant Director in Charge of the FBI's Washington Field Office Valerie Parlave (not seen) host a news conference to share the ... more 
Metropolitan Police Chief Cathy Lanier pauses as she listens to Assistant Director in Charge of the FBI's Washington Field Office Valerie Parlave (not seen) host a news conference to share the findings about the investigation into the shootings at the Navy Yard last Monday at the FBI's Washington Field Office in Washington, September 25, 2013. Navy Yard shooter Aaron Alexis believed he was being controlled by electromagnetic waves in the months before he killed 12 people at a Washington base on Sept. 16, an FBI official said on Wednesday. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS CRIME LAW MILITARY) less 
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Reuters | Photo By LARRY DOWNING / REUTERS
Wed, Sep 25, 2013 3:15 PM EDT