Vice presidents started traveling by plane via Air Force Two in 1959.
Vice President Kamala Harris flies in a C-32, a custom military version of a commercial jetliner.
It features a communications center, stateroom, and 32 seats for journalists.
Any plane carrying the US vice president is called "Air Force Two."
Similar to the president aboard "Air Force One," the designation of "Air Force Two" refers to any plane carrying the vice president, not a specific jet or model.
Over the years, several different planes have carried the Air Force Two title, transporting vice presidents and their staff around the world. The most commonly-used jet today is a C-32, a customized military version of a commercial Boeing 757-200 plane.
The vice president is generally prohibited from flying on "Air Force One," a plane carrying the president.
The president and vice president don't travel together for security reasons, according to The New York Times.
It's customary for presidents and vice presidents to salute service members as they board and disembark presidential planes.
Service members are required to salute the president as commander-in-chief, but not the vice president, according to AP. Still, it's customary for troops to salute vice presidents, as well.
Richard Nixon was the first vice president to travel internationally via jet on official business, visiting what was then the USSR in 1959.
Nixon, who served as President Dwight D. Eisenhower's vice president, flew on a Boeing VC-137A Stratoliner to visit the USSR in 1959.
Beginning with the Ford administration in 1975, this DC-9 jet flew as Air Force Two until 2005.
The jet was first used by President Gerald Ford's vice president, Nelson Rockefeller.
It featured a VIP cabin with 10 seats and a main cabin with 32 first-class seats.
The plane was retired from service during the Bush administration in 2005 and placed up for auction by the General Services Administration in 2013, according to USA TODAY.
Vice President Al Gore decorated the VIP cabin with family photos.
Gore worked on his acceptance speech for the 2000 Democratic National Convention aboard Air Force Two.
The cabin also featured a clock with different time zone displays.
The clock featured the time in Washington, DC, and whatever destination Air Force Two was bound for.
Vice President Joe Biden hung a map of the world in his Air Force Two work area.
Vice President Mike Pence's staff decorated Air Force Two for his birthday in 2017.
Staffers celebrated the vice president's birthday with streamers and balloons aboard the jet.
Vice President Kamala Harris also celebrated birthdays on the plane.
Harris brought cupcakes and sang "Happy Birthday" to her domestic policy advisor Kate Childs Graham in 2021.
Second Gentleman Doug Emhoff travels aboard Air Force Two, as well.
Emhoff filled out his March Madness basketball bracket en route to Las Vegas in March 2021.
The back of Air Force Two contains 32 business-class seats for members of the press.
Vice presidents and staff occasionally hold informal briefings with reporters known as "press gaggles" aboard Air Force Two.
The press area features TV screens that can play cable news.
The rear cabin also contains a galley, two bathrooms, and closets.
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