A firefighter was killed while working the Lolo Peak fire Wednesday afternoon — the second firefighter death in Montana this fire season. Missoula County Sheriff T.J. McDermott said an official investigation to determine the cause of death is still underway. Dispatchers at the Lolo Peak fire said the man was given CPR after apparently being struck by a falling snag. Rescuers worked to get him off the mountain and loaded onto a LifeFlight bound for Missoula. However, emergency workers could not save his life.