LEADERSHIP LECTURE U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, addresses master of business administration students during the Wharton Leadership Lectures at the University of Pennsylvania Wharton School of Business, Philadelphia, Oct. 2, 2008. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 307221-J-KAV84-578.jpg Photo Gallery