I think the advisory board should provide advice and organization. The members should come up with the plan, language, etc.
We should all work on this together.
In this situation, I think we should concentrate on urban caches that are near structures and were large numbers of people congrgate, i.e. parking lots. These places are more likely to cause evacutations, which seems to be the biggest concern of law enforcement.
I also think the individual cacher should approach thier own town because the local contact is very important. The plan and documents can certainly come from this site and cary our letterhead, as long as the contact is a local contact.