RAF: The Royal Air Force: Battle for the Skies - The Definitive History
Supplies from the Skies
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After the war, RAF transports helped keep Berliners alive during the Soviet blockade of the city in 1948/49. As well as flying round-the-clock operations into the airport, Sunderland flying boats delivered supplies by landing on Lake Havel near the city. During the 1960s the RAF augmented its fixed wing aircraft with helicopters like the Chinook