RVers and disaster relief -- experiences & recommendations?

We've been full-timing for a year & a half and have had a ball. Haven't 'strayed' too far from our home in the SE, but are really enjoying taking the time to see the local sites where we happen to be, discovering what nature & local history have to offer, etc.

With Harvey and Irma, though, and being mobile and still young/healthy enough to make a difference to those in need, we're looking to see how we might become involved in disaster relief.

We'd love to hear from folks involved in using their RV mobility to go into disaster areas, learning about both your good/bad experiences, the organizations you work through, and hearing any recommendations you might have for those of us interested in becoming involved ourselves.

Thanks in advance!