Yeah Matt Levine made that point this week -- the damaged party in this case is the university, who had admission slots basically resold in a different market
I'd imagine it would be along the same lines of what movies / studios get to shoot in certain cities -- relief from various tax types, priority in various permits, etc
Most of the trainings that I've gotten for active shooter-type events (gov't employee; they're frequent these days) advises you to silence your phone since the first thing that's gonna happen when the news shows up is everyone is gonna call you anyways.