Dean Potter

Dean S. Potter (April 14, 1972 – May 16, 2015) was an American free climber, alpinist, BASE jumper, BASEliner, and highliner. He was known for hard first ascents, free solo ascents, speed ascents, and enchainments in Yosemite National Park and Patagonia.
Death.
On May 16, 2015, Potter and Graham Hunt were killed while attempting a wingsuit flight from Taft Point above Yosemite Valley. While attempting to maneuver through the cliffs, each in turn collided with the rocks. Their bodies were discovered by a helicopter searching for the two men. Neither had deployed their parachute.