Designed to serve as a mobile command center and nuclear bunker, Air Force One is among the most secure aircraft in the world.
The current fleet consists of two highly modified aircraft, designated by the Air Force as VC-25A . Air Force One
These "flying fortresses" can reach speeds of 630 mph (Mach 0.92) and fly as high as 45,100 feet. Designed to serve as a mobile command center
While it has a standard range of 7,800 miles, it is capable of mid-air refueling , giving it technically unlimited range to keep the President airborne during a crisis. 🛡️ Defense & Security Features While it has a standard range of 7,800
The plane's 238 miles of internal wiring is heavily shielded to protect sensitive electronics and communications from the electromagnetic pulse of a nuclear blast.
It features 85–87 secure phone lines and encrypted satellite uplinks, allowing the President to address the nation or lead military operations from the air. Air Force One: Things you might not know - ABC News