Detective Richard Walsh is assigned to the Hazardous Devices Unit of the Baltimore County Police Department. He is a certified Hazardous Devices Technician and has responded to over 1000 calls for service relating to explosives, military ordnance and/or hazardous situations. Detective Walsh has lectured on bomb related subjects at all levels of government, business and industry and is considered an expert in the department regarding explosives. He is a member of the International Association of Bomb Technicians and Investigators as well as the International Society of Explosive Engineers