<Tr> <Th> Number built </Th> <Td> 8 </Td> </Tr> <Tr> <Th> Developed from </Th> <Td> Boeing 757 </Td> </Tr> <P> The Boeing C - 32 is a military passenger transportation version of the Boeing 757 for the United States Air Force . The C - 32 provides transportation for United States leaders to locations around the world . The primary users are the Vice President of the United States, using the distinctive call sign "Air Force Two", the First Lady and the Secretary of State . On rare occasions, other members of the U.S. Cabinet and Congressional leaders have been authorized to fly aboard the C - 32 for various missions . The C - 32, since its debut, has also served as Air Force One in place of the larger VC - 25A to airports that cannot support the Boeing 747 - based jumbo jet . </P> <P> The C - 32 is a military version of the Boeing 757 - 200 extended range aircraft, selected along with the C - 37A to replace the aging fleet of VC - 137 aircraft . Active - duty aircrews from the 1st Airlift Squadron, 89th Airlift Wing at Andrews Air Force Base, Maryland, fly the aircraft . </P>

What kind of plane does the secretary of state fly on