Pilots of No. 54 Squadron at Hornchurch in May 1940. Standing (from left): Colin Gray, Pilot Officer Bob Black and Flight Lt. D. George Gribble; seated (from left): Flight Lt. James A. “Prof” Leathart, Flying Officer Alfred W.A. Bayne and Flight Lt. M.C. Pearson. (Courtesy of Norman L. R. Franks)