JAMES A. WILKERSON, M.D., a mountaineer, whitewater rafter, backpacker, scuba diver, and skier, is the chairman of the Continuing Medical Education Committee. He is on the editorial board and is a section editor for the Wilderness and Environmental Medicine journal. He lives in Park City, Utah. KEN ZAFREN, M.D., FAAEM, FACEP, FAWM is an emergency physician in Anchorage, Alaska. He is the medical director of the Alaska Mountain Rescue Group, and a member of the clinical faculty at Stanford University Medical Center in California. He represents the United States on the International Commission for Mountain Emergency Medicine and is the associate medical director for the Himalayan Rescue Association of Nepal. ERNEST E. MOORE, M.D., FACS, FCCM has been director of the Rocky Mountain Regional Trauma Center at Denver Health since 1976, and is vice-chairman of surgery at the University of Colorado, Denver. With over 1100 publications, he is editor of the World Journal of Emergency Surgery and associate editor of the Journal of Trauma and American Journal of Surgery.