CNN  —  As he climbed up the 500-foot rockface El Matador, wedging small pieces of metal into the rock in the hope they would catch his fall, Jesse Dufton was almost entirely alone. Over his own labored breathing, panting and frustrated cursing, Dufton could hear the crackle in his ear of his wife and climbing partner, Molly Dufton, offering assurance and crucial guidance from the ground below. “I got you. Go on buddy, c’mon,” she calmly said through a headset. Calves burning, fingers pulsing,