Ordnance and Explosives directorate chief Mike hubbard addresses attendees at his March 21 retirement ceremony. With more than 32 years in the federal service and six years at the helm of the Huntsville Center directorate responsible for safely eliminating or reducing risks from ordnance, explosives and recovered chemical warfare materiel, Hubbard said he never dreamed he would stay that long (in civil service) but he was captivated by the culture.