Need info on funding for search and rescue groups
If you can get in with a governmental organization you can get funding help.
Beyond that, your best bet is to get Non-Profit status, this will require legal help and some cash outlay. After getting Non-profit status you can write for grants and get tax deductabe donations from donors.
Our non-profit status also allows us to have raffles and fundraisers as well.
There may be other ways in addition to this, but this is how we have gone about it.