I prefer the war room when there are professional people involved. I have suffered when some admins get into the wrong mindset. Instead of trying the fix agreed in the meeting and then reporting, they descended into "that didn't work it must now be X, Oh that didn't work, lets try Y..... " before they reported back in to the war room. It extended the troubleshooting by hours and the no one really knows what the fix actually is.
I have also worked in companies that the term war room has been used and has excluded the people who were the only technical staff who actually new what the problem was. Of course that extended the issue by weeks with the client nearly pulling the plug. Not really a war room, more like a gathering of the vain glorious :Whistling:
Now a days I tend to see who is in the "war" room before I hold a glimmer of hope.