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Boston Marathon Bombs Were Crude, Unsophisticated

Jim Avila goes into the anatomy of the types of bombs used at the race's finish line.
02:10 | 04/16/2013

Transcript for Boston Marathon Bombs Were Crude, Unsophisticated

ABC's Jim -- -- in Washington and reporting on this all -- good morning -- This morning toward the bombs that cause it's tragic wounds are actually. Quite small and portable like these -- devices... See More
This transcript has been automatically generated and may not be 100% accurate.
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