Foto de stock - May 07, 1969 - The 'Disaster' Which Was Staged Deliberately. Demonstration of Quick Fire-Fighting Foam This 'disaster' was staged deliberately when 4,000 gallons of jet aircraft fuel was packed around a four-engined former R.A.F. Shackleton and then set on fire. It was a spectacularly extravagant exercise - but a vital one. The Shackleton represented a jumbo-jet of the future, and the exercise was designed to discover how life could be saved in the event of a jumbo-plane disaster. A four-man crew of the Air Force Department Fire Service, from the R.A.F. Manston training school, went to work on the blazing plane at Stansted airport. They used Light Water Foam, which forms a film over the burning liquid fuel. The foam, developed by the 3M and Pyrene companies, reduces the danger of a fire re-igniting during rescue operations. The experiment ended when the blaze was put out in just 55 seconds. Photo Shows:- The Light Water, quick acting fire-fighting foam, is used to extinguish the flames around the burning plane during the experiment. (Credit Image: © Keystone Press Agency/Keystone USA via ZUMAPRESS.com)