Pedestrians watch as Los Angeles Police Department officers take part in a counterterrorism drill in downtown Los Angeles on Thursday June 6,2013. Thursday's late-morning demonstration began with an ... more 
Pedestrians watch as Los Angeles Police Department officers take part in a counterterrorism drill in downtown Los Angeles on Thursday June 6,2013. Thursday's late-morning demonstration began with an explosion, officers firing blank ammunition at pretend suspects, and law enforcement helicopters flying low among downtown office towers. (AP Photo/Nick Ut) less 
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Associated Press | Photo By Nick Ut
Thu, Jun 6, 2013 5:56 PM EDT