Command D was one of several bunkers once used by the United States Air Force in the years leading up to the Great Disaster. Command D's primary function was that of a strategic planning center. The bunker included a single above-ground level as well as at least one sub level. Command D survived the destruction wrought by the Great Disaster and became the base of operations for a single occupant, Buddy Blank. Buddy shared the bunker with his young grandson, Kamandi (who was named after the facility) and remained there until he was an old man.