2009 Operation Denali: National Geographic's Best Adventure

Marc Hoffmeister, team leader of Operation Denali, was recently awarded Adventurer of the Year. This expedition had unique challenges with 4 of the 6 team members severely injured from the Iraq war. For example, Jon Kuniholm, who lost his arm to an IED, carried two extra prosthetic arms in case one broke. Matt Nyman, who lost his leg in a helicopter crash, hauled extra prosthetic legs in his sled. These guys prepared by taking an AMS mountaineering course in 2008 and made an inspiring video everyone should watch. Be warned, there are some graphic parts.