Duke alumnus General Martin Dempsey is the nation's highest ranking military officer. As chairman of the Joint Chiefs of Staff, he's learned a lot about leadership over the years. General Dempsey shared those lessons as a keynote speaker in the 2013 Fuqua/Coach K Leadership Summit at Duke University's Fuqua School of Business. The event is hosted  by the Fuqua/Coach K Center on Leadership and Ethics (COLE) and brings together top leaders to collaborate about the challenges of leadership in a fast paced and ever changing environment.