Disaster preparedness

In Oakland/San Francisco we have Disaster Healthcare Volunteers (DHV), and we also have the Medical Reserve Corps, which I believe is open to anyone who would like to volunteer. There are three levels: Level 2,3, and leader. In order to become a volunteer you must take a series of classes that range from earthquake preparedness to terrorism awareness. I'm also aware that the Red Cross has a divison for people who would like to volunteer, I remember looking for the sign up page a while back, but I never followed through.