The bunkers in Call of Duty: Warzone are opening, and if you have a Red Access Card, you'll be able to get inside most of them. However, Bunker 11 has its own method of entry. Tony explains how to get inside in the video above.
The Easter egg you'll find inside Bunker 11 seems to hint at the next Call of Duty title, rumored to be Black Ops Cold War. That's unconfirmed at this time, but we should learn more about 2002's Call of Duty game before long.