Naked at the Knife-EdgeNaked at The Knife Edge, Vivian James Rigney's compelling and often harrowing true account of summiting Everest, offers a unique window into lessons on leadership and what it takes to succeed in any circumstance. Only a relatively small group of individuals has climbed the highest peak on each of the planet's seven continents. Known as the Seven Summits, it is a feat that typically takes years and an enormous amount of planning, training, and effort,