Explosives expert and former Michigan State Police trooper David Balash talks about Boston bombings

(WXYZ) - Retired Michigan State Police trooper David Balash is an explosives expert who spent years dealing with bombs.

He joined Stephen Clark and Carolyn Clifford on 7 Action News at 6pm to give his insights on the bomb and the investigation.

YOU CAN WATCH THE INTERVIEW IN THE VIDEO PLAYER ABOVE 

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