New York Police Department counter-terrorism officers patrol the course near the finish line area in Central Park before the start of the New York City Marathon in New York, November 3, 2013. In ... more 
New York Police Department counter-terrorism officers patrol the course near the finish line area in Central Park before the start of the New York City Marathon in New York, November 3, 2013. In addition to cheering supporters, runners in this Sunday's New York City Marathon will also be monitored by bomb-sniffing dogs, police scuba divers and surveillance helicopters to prevent an attack similar to the one at the Boston race earlier this year. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT ATHLETICS) less 
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Reuters | Photo By MIKE SEGAR / REUTERS
Sun, Nov 3, 2013 9:03 AM EST