Tom Stankiewicz, commander of the Erie bomb squad who responded to the 2003 'Pizza Bomber' case, tells us how bomb squads operate and what new tools his team started carrying after the Brian Wells case.

To better understand package bombs and the serial bombers who employ them, like Austin serial bomber Mark Conditt, A&E True Crime spoke with Tina Sherrow, a retired bomb technician and certified explosives specialist for the ATF.