Jim Herson and Anne Smith live in the Bay Area. They're in their fifties. Jim has worked the same computer science job since he graduated college in 1982, and he and Anne have been together nearly that long. They have two kids, a 17 year old daughter and a 13 year old son, who they shuttle around the city in a maroon Subaru wagon. An all-around American family. Except for one thing-- Jim and his kids get their family bonding time a thousand feet off the deck on Yosemite's classic routes.