Avro Lancaster B Mk I (Special) of No. 617 Squadron, loaded with a 'Grand Slam' 22,000-lb deep-penetration bomb, running up its engines at Woodhall Spa, Lincolnshire, 1944. Frame:natural attempts to draw the fire

attempts to draw the fire of a Turkish sniper to reveal his position

Home Front: Churchill demonstrating the zipper on his famous siren suit to General Dwight D Eisenhower

249 Squadron RAF

A Westland Sea King HAS

Avro Lancaster B Mk I (Special) of No. 617 Squadron, loaded with a 'Grand Slam' 22,000-lb deep-penetration bomb, running up its engines at Woodhall Spa, Lincolnshire, 1944. Frame:natural attempts to draw the fireAn Avro Lancaster B Mark 1 (Special) of No. 617 Squadron RAF, loaded with a 22,000 lb MC deep penetration bomb (Bomber Command executive code word 'Grand Slam'), running an engine test in its dispersal at Woodhall Spa, Lincolnshire.