Aaron Linsdau is the second only American to ski alone to the South Pole. He set the world record for surviving the longest solo expedition to the Pole. He is an Eagle Scout and has received the Outstanding Eagle Scout Award. He has walked across Yellowstone National Park in winter, crossed the Greenland tundra alone, has trekked through the Sahara desert, and climbed major mountains around the world. Terry M. Williams, M.D., is an emergency medicine specialist and adventurer who has impacted many lives. He is the author of several medical papers and Emergency Medicine textbook chapters. In addition to his full-time medical work in California, he has treated patients in Guatemala, Saudi Arabia, on cruise ships around the world, in Northern India, Thailand, and the highlands of Papua New Guinea.