Last Known Activity He destroyed 5 enemy aircraft in aerial combat in the Pacific Theater and then went to Europe and shot down 1 German aircraft before he was himself shot down and held as a POW.
Synopsis of his Silver Star citation: Awarded for actions during World War II
(Citation Needed) - SYNOPSIS: First Lieutenant (Air Corps) Joseph T. McKeon, United States Army Air Forces, was awarded the Silver Star for gallantry in connection with military operations against an opposing armed force while serving as a Pilot with the 433d Fighter Squadron, 475th Fighter Group, FIFTH Air Force during World War II.
General Orders: Headquarters, V Fighter Command, General Orders No. 5 (1943)