Your creativity in using drones is the only limit on their uses.
See this announcement, WDFW to use drone to count spawning salmon nests.
Not much of a connection to disasters or emergency management? Not really — BUT, it is an example of how the use of drones is unlimited. Use your own creativity to come up with uses for a drone for your own mission assignments. Don't be bound by what you have read, what has been done in the past. Carve a new path for drone usage!
Steve Myers shared the link above.