The two-meter-thick, 25-ton alloy giant door slowly opened, and the incandescent lamp behind it lit up one after another as they welcomed a group of unusual visitors.
The soldiers stationed at the door saluted, then stepped aside.
The group of people stepped through the door, then the engine that was connected to the door once again started.
With the sound of muffled steel friction, Mike Pence's mood also returned from restlessness to calmness with the giant door gradually closing.
After the door closed, the entire base was completely isolated from the outside world, and the door could only be opened from the inside.
