These guys did run some command post exercise type games back in the 80s from what I recall reading in "Battle" magazine etc:
http://www.wargamedevelopments.org/index.htm Should be something about it in the back copies of their "Nugget" magazine?.
The military does that sort of thing on a regular basis - just use the command post radio vehicles without the need for everybody else to go out and about. Tests HQ procedures without expending fuel, digging up Farmer Giles fields etc.