President Biden's "doomsday" E-4B plane was spotted flying over Wales on Tuesday night ahead of his commemoration of the Good Friday Agreement in Northern Ireland.
The president's "doomsday plane" is a $223 million E-4B called "Nightwatch," which is capable of surviving a nuclear blast. Following a nuclear attack, the president, secretary of defense, and joint chiefs of staff would board E-4B. From there, they would be able to order nuclear strikes or execute emergency war orders from the "flying war room," Insider previously reported.
The E-4B plane was spotted on Tuesday night flying over Wales, according to NorthWalesLive. According to the outlet, it is typical of the plane to follow closely behind the president's Air Force One in the skies when he travels.
The majority of the E-4B's capabilities are classified, but the plane can carry 112 people, can fly for 12 hours straight without refueling, and can refuel in the sky, allowing it to fly for several days in a row, the United States Air Force previously told Insider. Flying the E-4B "Nightwatch" costs $159,529 per hour, which is the most expensive plane that the Air Force operates, according to the Air Force.