I toured the first presidential aircraft, 'The Flying White House,' used by FDR and Harry Truman. Take a look inside.

Source: Business Insider

The Douglas VC-54C, also known as "Sacred Cow. "Talia Lakritz/Business InsiderThe Douglas VC-54C Skymaster was the first plane built specifically for use by the US president. "The Flying White House" became better known by its nickname, the "Sacred Cow.