Get to know your neighbors. Find out if anyone has specialized equipment, like a power generator or expertise such as medical knowledge, that might help in a crisis. Make arrangements to check on your neighbor's home or pets if one of you is away when a disaster strikes.
Give Blood
American Red Cross of Greater Los Angeles:
310-445-9900 and/or American Red Cross of Greater Los Angeles
Donate money
Donate money to an established organization.
Local Neighborhood Watch
Set up your own local Neighborhood Watch group. Train neighbors to assist neighbors.