Jim Davidson discusses his book, "The Next Everest, Surviving the Mountain's Deadliest Day and Finding the Resilience to Climb Again," in which he tells about two climbs: one in 2015 where a 7.8 magnitude earthquake left him and his team stranded for two days at 20,000 feet…and a successful climb he did just two years later. An amazing story of grit, teamwork and unimaginable determination.