Polaris is offering a grant program for non profit organizations.
http://www.polarisindustries.com/en-us/ATV/News/PolarisTRAILSGrantProgram.htm
I posted this a while ago - grizzlybear added a few comments, if ya wanna see what he said heres the link.
http://www.atvflorida.com/forum/index.php/topic,16264.0.html
ONFA will be applying in the next grant cycle in hopes of getting the funding to obtain a rescue trailer, Yamaha Rhino (the USFS will not allow trailers to be pulled by ATV's) and a duel axle trailer to carry the rhino and rescue trailer. We will leave it at the Lake George Ranger Station (sort of the middle of the forest) and make it available to any rescue in Marion County and adjoining counties.