That’s one of the keys of working in a disaster zone: lots of people have to work together.
Government (local, state and/or tribal, federal); law enforcement (sometimes National Guard); utilities, Public Works; search & rescue; tree workers; emergency repairs (Core of Engineers’ contractors); social welfare (Red Cross, etc.); damage assessment and insurance; residents; . . .
That is why Emergency Managers are often more comfortable working with established volunteer groups, versus ‘spontaneous, unaffiliated, volunteers’ (SUVs), even if well intentioned.
Philbert