Whenever US President Donald Trump travels, the plane that most immediately comes to mind is the Air Force One.
However, what many do not know is that there are four more super jets that follow Donald Trump on his air travels.
The super jets are known as E-4B "Doomsday" 747 and they act as cover for the Air Force One in case there is a "doomsday,"—the name used for nuclear war.
The super jets are also called "National Airborne Operation Centers and are able to send and receive communications to and from any part of the world.
They serve primarily to support military commanders during a military crisis and can survive an electromagnetic pulse without damaging any of their intricate systems.
Simply put, they are airborne military command centers for the US Commander in Chief, Defense Secretary and Joint Chiefs of Staff. Even when they are on the ground, their engines keep running 24 hours a day.
Watch a guided tour of one of these super jets in the video below.
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