Berlin Tegel Airport eminent aerospace engineers, which included German rocket pioneer Wernher von Braun. In 1937, the rocket pioneers left Tegel in favour of the secret Peenemünde army research centre. During World War II, the area served once again as a military training area, mostly for Flak troops. It was destroyed in Allied air raids. Plans for converting the area into allotment gardens were shelved due to the Berlin Blockade, which began on 24 June 1948. In the ensuing US-led Berlin Airlift, it quickly turned out that Berlin's existing main airport at Tempelhof was not big enough to accommodate all relief aircraft. As
Kansas City International Airport strife and interruptions raised its cost to $250 million. Kansas City renamed the airport Kansas City International Airport (although it kept MCI as its airport code). TWA, Braniff and everyone else moved to MCI. Many design decisions were driven by TWA, which envisioned it would be its hub, with 747s and Supersonic Transports whisking people from America's heartland to all points on the globe. Streets around the airport included Mexico City Avenue, Brasília Avenue, Paris Street, London Avenue and Tel Aviv Avenue. TWA vetoed concepts to model the airport on Washington Dulles International Airport and Tampa International Airport, because those