Wing Commander Guy Gibson (in the doorway of his Avro Lancaster) ready for the Dams’ raid. Left to right: Flight Lieutenant R.D. Trevor-Roper; Sergeant J Pulford; Flight Sergeant G.A. Deering; Pilot Officer F.M. Spafford; Flight Lieutenant R.E.G. Hutchinson; Gibson; and Pilot Officer H.T. Taerum RCAF.