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Next month we'll be marking one of the most famous raids in wartime history and a group of legendary airmen known as The Dambusters.
In 1943 this specially-formed unit under commander Guy Gibson attacked a series of dams in Germany in a bid to cripple the Nazi war effort, using an ingenious bomb designed to bounce along the water - a bomb tested off the coast of Kent and Dorset.
Well 70 years on there are only three Dambusters still surviving and only one in this country. His name is George ''Johnny'' Johnson.