Emergency plans are definitely top on the list (and he'll make sure Mary makes note of that). "If there is a way to use the tablets for tracking or at least putting out a message, that would be one ida," Cao Pi suggests. "At the very least, having a single central location in each place designated as the emergency fallback is the easiest and plainest solution. People may still scatter to other locations - the church, for example - but the fewer who simply run off with no idea where to find shelter, the better. The Invincible and...the library, perhaps?"