Douglas A-1D Skyraider (AD-4NA)

In fact, Douglas has been the 1st aircraft manufacturer to produce the Imperial Shuttle ... ! Not convinced ? Check that link : http://www.google.fr/search?q=Lambda+class+shuttle&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla%3Afr%3Aofficial&client=firefox-a

Douglas A-1D Skyraider (AD-4NA)