MULLEN'S GIFT South African Gen. Godfrey Nhlanhla Ngwenya, chief of the National Defense Force, presents U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, with a thank-you gift from his homeland at the Pentagon, May 20, 2010. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 508171-O-EJT36-182.jpg Photo Gallery