O'Brien, Vanessa: - Vanessa O'Brien is a British and American mountaineer, explorer, public speaker, and former business executive. As a result of her dual nationality, she became the first American and British woman to successfully summit K2 on July 28, 2017 when, on her third attempt, she successfully led a team of twelve members to the summit and back. In 2018, she received Explorer of the Year from the Scientific Exploration Society for her efforts. In 2022, Vanessa became the first woman to reach extremes on land, sea, and air, completing the Explorers' Extreme Trifecta after passing the Kármán line on Blue Origin's sixth human spaceflight, NS-22. She is a Fellow of the Royal Geographical Society and a member of the Scientific Exploration Society (SES).