S7E3: One paw in front of the other

Iditarod sled dog teams are into the first 200 miles of trail, after the race clock started ticking Sunday. Mushers are pacing their dogs and there's a lot of leapfrogging going on out there, as they follow their own run-rest schedules. In this episode, we have a look at the competitiveness of the small field, and we have our Dog of the Day -- a big boy named Boomer -- as well as a listener question about day jobs, for those who do not list their fulltime occupation as "dog musher."