On that day, during a raid over Ploieşti, Romania, his aircraft was badly damaged and several crewmen wounded by fire from enemy fighters.

[3] Second Lieutenant Kingsley's official Medal of Honor citation reads: For conspicuous gallantry and intrepidity in action at the risk of life above and beyond the call of duty, June 23, 1944 near Ploesti, Romania, while flying as bombardier of a B17 type aircraft.

The radio operator and engineer notified 2d Lt. Kingsley that the tail gunner had been wounded and that assistance was needed to check the bleeding.

2d Lt. Kingsley made his way back to the radio room, skillfully applied first aid to the wound, and succeeded in checking the bleeding.

A few minutes later when the pilot gave the order to prepare to bail out, 2d Lt. Kingsley immediately began to assist the wounded gunners in putting on their parachute harness.

In the confusion the tail gunner's harness, believed to have been damaged, could not be located in the bundle of blankets and flying clothes which had been removed from the wounded men.

With utter disregard for his own means of escape, 2d Lt. Kingsley unhesitatingly removed his parachute harness and adjusted it to the wounded tail gunner.