U.S. Chairman of the Joint Chiefs of Staff Admiral Michael Mullen testifies at the U.S. Senate Armed Services Committee on Capitol Hill on February 2, 2010 (Jim Young/Courtesy Reuters). Tomorrow ...

STEPHANOPOULOS: Hello, again, I hope you're enjoying this Memorial Day weekend. We're going to begin today with the president's top military adviser, Admiral Mike Mullen , the chairman of the Joint ...

Mullen, who attained the rare rank of four-star admiral and commanded one high-level posting after another during his superlative, 43-year career in the Navy, served as Chairman of the Joint ...