John Dau
John Dau chats with cadets after his 2015 National Character and Leadership presentation Feb. 27, 2015 in Arnold Hall. Dau, 41, was one of thousands of Sudanese "Lost Boys," refugees who marched more than a thousand miles to safety after the Republic of South Sudan collapsed. Dau encouraged cadets to never give up in the face of any obstacle. (U.S. Air Force photo/Ray Bowden)