How The FBI Will Analyze Thousands Of Hours Of Boston Bombing Video

An FBI forensic video instructor reveals how investigators will sort through reams of video footage in preparation for the eventual trial of Dzhokar Tsarnaev. It was a 7-Eleven's security footage that helped trace Tamerlan and Dzhokar Tsarnaev to a Boston suburb the day after the U.S. Federal Bureau of Investigation publicly released photos and videos of the Boston Marathon bombing suspects. But that won't be the end of video evidence in this case. Now that Dzhokar has been captured, U.S. agenci...