OFFICER:  ROBERT E. MAHN, JR.

DEPARTMENT:  Yellowstone National Park Service

DATE OF INCIDENT:  January 17, 1994

DETAILS:  Ranger Mahn was killed in a snowmobile accident in Yellowstone National Park.  Ranger Mahn had left the east entrance of the park to assess the snowmobile route to Sylvan Pass for avalanches and travel conditions.  During this trip, high winds created poor visibility, causing him to accidentally leave the road and drive his snowmachine over a steep embankment.