Technical Sergeant Dorsey was the tail gunner of a B-26B Invader bomber with the 8th Bomber Squadron, 3rd Bomber Group. On 3 October 1950, while on a night intruder mission, his aircraft was hit by anti-aircraft fire and crashed one mile north of Hangju, North Korea. His remains were recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.

Technical Sergeant Dorsey was awarded the Air Medal with 8 Oak Leaf Clusters, the Purple Heart, the Korean Service Medal, the United Nations Service Medal, the National Defense Service Medal, the Korean Presidential Unit Citation and the Republic of Korea War Service Medal.