Retired Air Force Col. Frank P. Dunnington Jr. died Tuesda of heart disease at his home on Indian Head Road in Ruxton. He was 83.
Colonel Dunnington retired in 1965 as head of the Air Force Office of Special Investigations for District 12, which handled counterintelligence work in Illinois, Indiana and Missouri. He joined the Office of Special Investigations during the Korean War.
He was survived by several cousins.