The US president has a $223million (£160m) militarised Boeing 747 which is designed to survive a nuclear event.

In the event that military ground communication was destroyed in nuclear warfare, the aircraft would become the command and control centre for the US military's most senior officials.

The aircraft, called the E-4B 'Nightwatch' is equipped with everything needed to continue controlling the country, even from the skies.

A fleet of these E-4Bs make up the National Airborne Operations Center, one of them is alert at all times and one follows the President whenever he travels in Air Force One.

The plane consists of three decks and can house a crew of up to 112 people.

Living quarters for officials and 18 bunks for the Air Force crew are located at the front of the aircraft.

The centre of the plane holds the 'battle-staff room', where military strategists curate a response to a crisis.

External communications and technical controls are located at the back of the E-4B.

The plane would be able to survive a nuclear explosion simply by flying high enough that it will be out of harm's way.

Windows of the plane have a wired mesh to prevent the passengers from radiation that would otherwise enter the aircraft.

Four engines in the plane's mechanics means that it can fly for seven whole days before needing to stop for more fuel.

The running costs of the aircraft amounts to $160,000 (£115,000) per hour to fly, which makes it the most expensive of the Air Force crafts.

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Originally designed in 1973, this series of planes were designed to protect a President in the case of a nuclear attack during the Cold War.

The US is now in the process of trying to replace and update the planes.

In December of last year, interested parties were invited to submit proposals for replacements which involved reconstructing existing aircrafts.

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