The technicians exited, leaving the armored door open behind them.

He pressed a button and the armored door opened with a soft click.

There were easily two dozen locks on the armored door!

Chapter 3 I opened the huge armored door to the training area and started to step inside.

I covered the viewport on the inside of the armored door.

From beyond an armored door across the corridor came the sound of machinery.

That armored door will close and lock, if you haven't used the plate, in thirty seconds.

An armored door itself the size of a plane.

He smiled and nodded as the armored doors behind him slid back.