PENNANT PROGRESS U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, signs a pennant signifying the completion of the 25,000th millitary vehicle produced in Charleston, S.C., June 3, 2010. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 672796-O-BMZ58-730.jpg Photo Gallery