Built to Survive
In the event of a nuclear attack, your chances of survival are practically none. So, if that happens, you’d better locate the AFO and seek refuge. You have a strong probability of surviving an attack in the AFO. In the event of a nuclear attack, Air Force One functions as a bunker.
Source: Wikimedia
The plane’s body is armor-plated, and the windows have armor-plated glass. The plane can flee a ground attack’s blast while also acting as a shelter. Furthermore, radioactive particles cannot penetrate the plane’s body.