Assertion: airlift's aircraft | /r/CapableOf | transport a u.s. president
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text: Nicknamed the "Sacred Cow", this modified C-54 Skymaster (VC-54C), which included a vertical lift in the lower fuselage for the President and his wheelchair, became the first military aircraft to transport a U.S. president when President Roosevelt took it to the Soviet Union for the Yalta Conference in February 1945.