Michael Dunn always wondered how he would die, whether his life might be lost in a plane crash or if he would grow old and simply not wake one morning. But as he repeatedly was raked by the grizzly's 4-inch-long claws and berry-stained fangs, he feared fate was at hand.

A busy day at a popular park generates lots of incidents for rangers to handle.

Famed explorer Meriwether Lewis is said to have committed suicide while overnighting at an inn along the old Natchez Trail in 1809. Many skeptics, however, believe he was slain. The Lewis descendants want his remains exhumed for examination, but the Park Service won’t allow it.