>>7673354 the original doomsday plane is the E-4. The E-6 is also sometimes referred to as a doomsday plane as well.
Welcome to the “Doomsday” planes — America’s secretive set of jets designed to wage nuclear war from the skies.
The specially designed aircraft follow President Donald Trump wherever he travels in Air Force One in case nuclear war erupts.
Known officially as National Airborne Operation Centers, they allow US leaders and wartime hawks to issue directives and wage war from the sky.
The Boeing E-4Bs costs around $250 million each to create and $160,000 per hour to operate.
They also feature a vast array of defense mechanisms, including the ability to withstand electromagnetic pulses.
The jet’s crews also use traditional analog flight instruments to navigate as they are less susceptible to cyberattack.
The planes, while not technically secret, are rarely mentioned — the Air Force does not even publicly acknowledge owning some of them.
In operation since the 1970s, these airborne command posts were long considered the best chance for a Cold War president to survive a nuclear attack.
https://nypost.com/2017/09/21/trumps-doomsday-plane-is-a-flying-nuclear-bunker/