It follows firefighters as they prepare for a major burn . 12-hour shifts , fire digging , brush clearing in between . VBS crew calls it ` ` the hardest and least rewarding job we have ever tried to do ''
VBS follows firefighters as they prepare for a controlled burn . 12-hour shifts involve ditch digging , brush clearing in mountains . VBS crew calls it `` the hardest and least rewarding work we have ever tried to do ''