Here's an app we were envisioning for use in Los Angeles where First Responders could join from their devices after receiving a notification of an emergency nearby. The LA Dept of Transportation would be able to see all traffic throughout LA and be able to throttle or open intersections to allow ambulances and police through areas faster than the normal slow pace of traffic.
As each responding agency would join a Case they could stream their video and insight from their perspectives to provide as much advance information for life saving responders to help reduce risk faster.