Stymied by treacherous terrain and untamed wilderness, authorities are struggling to find an Army veteran suspected of killing four people at a Montana bar last week. Investigators say Michael Paul Brown,

As the search for Michael Brown enters its sixth day, a local outdoor expert describes the challenging wilderness terrain that's complicating the manhunt for the suspect in the Anaconda bar shooting.

Police are looking for Michael Paul Brown, 45, after four people were shot and killed in The Owl Bar in the small town of Anaconda, Montana.