Frank A. Trainor was born on July 14, 1913 in Philadelphia, Pennsylvania and he resided in Mays Landing, New Jersey. He attended Grammar School in Pleasantville and Atlantic City, New Jersey. Prior to joining the New Jersey State Police, Sergeant Trainor was a truck dispatcher.

Sergeant Trainor enlisted with the New Jersey State Police on August 15, 1938 as a member of the 27th State Police Class. He was assigned to Troop "D", New Brunswick. His service with the Division was characterized by loyalty, fearless performance of duty and faithful and energetic devotion to the principles of the New Jersey State Police.

Sergeant Trainor died as the result of injuries received when struck by a motor vehicle while in the performance of his duty.

At approximately 6:00 A.M. on August 3, 1953, Sergeant Trainor had pulled-over a vehicle travelling south on the New Jersey Turnpike, 15 miles south of Bordentown. As he was returning to his troop car after securing the driver's license and registration, Sergeant Trainor was struck by a 1953 Mack Truck. Sergeant Trainor's body flew over the roof of the car he had pulled-over and landed face-down in the shoulder of the road. He suffered a fractured left leg, fractured ribs, fractured spine and a fractured skull. He was pronounced dead at the scene.

Sergeant Trainor served 14 years and 11 months with the New Jersey State Police and was survived by his wife and 9 year old daughter. He was 40 years old.