U.S. President Barack Obama participates in a briefing from top military leaders while visiting U.S. Central Command at MacDill Air Force Base in Tampa, Florida, September 17, 2014. REUTERS/Larry ... more 
U.S. President Barack Obama participates in a briefing from top military leaders while visiting U.S. Central Command at MacDill Air Force Base in Tampa, Florida, September 17, 2014. REUTERS/Larry Downing less 
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Reuters | Photo By LARRY DOWNING / Reuters
Wed, Sep 17, 2014 1:32 PM EDT