"Royal Air Force Bomber Command, 1942-1945." Armourers prepare to load 1,000-lb MC bombs into the bomb-bay of an Avro Lancaster B Mark III of No. 106 Squadron RAF at Metheringham, Lincolnshire, for a major night raid on Frankfurt, Germany. The chalk markings on the bombs indicate that each has been fuzed with a No. 43 air-armed nose pistol, the safety pins of which can be seen hanging from the nose rotor. These will be removed shortly before the crew board the aircraft.