Search with aerial rc multi-rotor (S.W.A.R.M.) is a worldwide volunteer search and rescue network of over 1,100 pilots. This network provides platforms at no cost to SAR organization of the family.
The benefit of using drones rather than helicopters or fixed wing air craft is that is that the unmanned aircraft is smaller and more maneuverable can aid and support search efforts at a fraction of the cost.
Multi-rotors could be utilized for dropping supplies to unreachable locations.