The World's Most Expensive Military Machines Ever Created

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

The Boeing E-4B, nicknamed the "Doomsday Plane," has operated since 1974 as an airborne headquarters for American leadership. Featuring comprehensive communication networks and electromagnetic pulse shielding, it guarantees command authority during catastrophic emergencies. It continues to serve as an indispensable asset for homeland security.