Bombers seen standing nonchalantly in crowd 10-20 minutes before bomb

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"Tamerlan Tsarnaev, third from left, who was dubbed Suspect No. 1 and second from left, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2, are pictured 10 to 20 minutes before the bombings at the Boston Marathon." Bob Leonard/AP, via Boston Globe, 4/20/13 (this was picture #20 on a slide show Boston Globe had on front pg. of website)




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