Ron Hoglin turned back before making an attempt on the summit of Everest. He was trying to do it without the assistance of oxygen. The strong winds made the going very tough, and he decided at the last camp that he was too tired and decided to turn back. He has made the summit of Everest before.
He has previously stated that he wants to go back to K2, so would be interesting if he does or not. Last year he was part of a group that was unable to make the summit of K2.