Bowie Volunteer Fire Department, Bowie, MD 1978-86
Maryland Fire and Rescue Institute, University of Maryland, 1977-79
Fire Chief, Lake Barton Fire Control District, Orlando, FL 1974-77
Union Park Volunteer Fire Department, Orlando, FL 1965-69
Potomac Heights Volunteer Fire Department, Indian Head, MD 1956-63
Business
DoD Special Projects Coordinator, L. N. Curtis & Sons, Oakland, CA
Fire Programs Team Leader, Integrity Solutions, Frederick, MD Special Projects Coordinator, ADS Inc., Virginia, Beach, VA
Cordovan Company, Bowie, MD Fire and Emergency Services Consultants and Training
Killen's Tree Service, Orlando, FL professional tree removal
Killen Enterprises, Inc, La Plata, MD residential refuse collection, professional tree
removal, and farm feed sales
Bumpy Oak Kennels, La Plata, MD and Orlando, FL, breeder, professional trainer and exhibitor of pure bred German Shepherds, Welsh
Corgis, Irish Setters and Doberman Pincers
Organizations
President, International Association of Fire Chiefs 2005-2006
Former Commissioner, Commission on Fire Accreditation International
Founder and Charter Chairman of the Federal/Military Section of the IAFC; served three terms as Chairman.
President International Association of Fire Chiefs Foundation 2000-04, Trustee since 1999 and served as Board Member, and Vice-President.
National Fire Protection Association Technical Committees 1975-2003
Maryland Fire Chiefs Association
Tennessee Fire Chiefs Association
Virginia Fire Chiefs Association
Florida Fire Chiefs Association
Society for the Preservation & Appreciation of Antique Motorized Fire Apparatus in america