6. Advanced Airborne Command Post (Boeing E-4B)

Joined the Service in 1974
Producing company: Boeing
Price: $250 million
The Boeing E-4B Advanced Airborne Command Post, sometimes known as the “Doomsday Plane,” took to the skies in 1974 and is essentially a flying fortress. This massive structure was originally intended to serve as a mobile command center for the United States during the Cold War. During nuclear wars or other national emergencies, the President, the Secretary of Defense, and the Joint Chiefs of Staff will make decisions.

Advanced Airborne Command Post (Boeing E-4B) ©Masteruploader / Wikipedia.org
The Boeing-produced E-4B has a multi-layered communication suite that guarantees continuous connectivity even in post-nuclear scenarios. Its EMP (Electromagnetic Pulse) shielding, which enables it to function without interference from nuclear blasts, is one of its most distinctive features.