Henry (Hank) Jackson Adams Jr., 70, a retired U.S. Marine Corps colonel and an Arlington resident for the last 20 years, died Friday at the Fairfax Nursing Home. Col. Adams had suffered a stroke in 1967 and had been hospitalized since that time.

Col. Adams was born in Fostoria, Ohio. He graduated from Stanford University in 1928. He worked as an FBI agent in New Jersey before being called up by the Marines to serve in the Southwest Pacific during World War II. Col. Adams retired from the Marines in 1945, after being wounded in the battle of Okinawa.

Col. Adams had received a large number of medals because of his marksmanship. He had been a member of the U.S. International Rifle Team, and had held the all-around rifle and pistol championship of the United States. In addition, he had won the Dupont trophy and the Williams (now called the Harrison) trophy.

Col. Adams served as undersheriff of San Diego County, Calif., after the war. After running unsuccessfully for the sheriff's office in that county in 1953, he re-entered the Marine Corps and served as provost marshall of the Marine base in San Diego, retiring a second time in 1957, and moving to Arlington.

Survivors include two daughters, Ann Leilani, of London and Christie Adams, of Honolulu; two sons, Henry Jackson III and John Quincy, both of Honolulu.