MAJOR HARRY KERRISON WAS ON #422 AS A PIONEER in 1942. HE WAS MAINLY INVOLVED IN SECRET EQUIPMENT INSTALLATION (RADAR AND AIRCRAFT IDENTIFICATION), AND WAS A #422 PIONEER. HIS INVOLVEMENT ALSO WITH PHYSICAL TRAINING HAS BEEN THROUGHOUT HIS CAREER. HARRY PLAYED A MAJOR PART IN THE 2007 REUNION, REVIEWING THE HISTORY OF #422.