Washington DC Mayor Vincent Gray speaks during a news conference after a shooting at the Washington Navy Yard in Washington in this file photo taken September 16, 2013. District of Columbia voters ... more 
Washington DC Mayor Vincent Gray speaks during a news conference after a shooting at the Washington Navy Yard in Washington in this file photo taken September 16, 2013. District of Columbia voters head to the polls on Tuesday for the crowded Democratic mayoral primary with incumbent Mayor Vincent Gray in a dead heat after being linked to a campaign-finance scandal. REUTERS/Joshua Roberts/Files (UNITED STATES - Tags: CRIME LAW MILITARY POLITICS) less 
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Reuters | Photo By JOSHUA ROBERTS / REUTERS
Mon, Mar 31, 2014 3:50 PM EDT