Here's another interesting article. A breakdown of costs and numbers of SARs per park in the NPS:

Dead Men Walking: Search and Rescue in US
National Parks
Wilderness and Environmental Medicine, 20, 244-249 (2009)

Dead Men Walking Article

George

None of the views expressed here in any way represent those of the unidentified agency that I work for or, often, reality. It's just me, fired up by coffee and powerful prose.