Captain (U.S. Navy) in the context of "Flag officer"

USS Shaw (DD-373) was a Mahan-class destroyer and the second ship of the United States Navy to be named for Captain John Shaw, a naval officer. Commissioned in 1936, Shaw was plagued by construction deficiencies and was not fully operational until 1938. After training in the Atlantic, she was transferred to the Pacific and was berthed in a dry dock in Pearl Harbor on 7 December 1941.

Shaw sustained major damage from several bomb hits by Japanese forces during the attack on Pearl Harbor. The spectacular explosion of her forward magazine provided one of the most iconic photographs of the attack. She was repaired within a few months of the attack, and served in the Pacific through the rest of World War II, earning 11 battle stars.

Ronald Ellwin Evans Jr. (November 10, 1933 – April 6, 1990) was an American electrical engineer, aeronautical engineer, officer and aviator in the United States Navy, and NASA astronaut. As Command Module Pilot on Apollo 17 he was one of the 24 astronauts to fly to the Moon, and one of 12 astronauts to fly to the Moon without landing.

Before becoming an astronaut, Evans graduated with a Bachelor of Science degree in electrical engineering from the University of Kansas and joined the U.S. Navy in 1956. After receiving his naval aviator wings, he served as a fighter pilot and flew combat missions during the Vietnam War. In 1964 he received a Master of Science degree in aeronautical engineering from the U.S. Naval Postgraduate School. Achieving the rank of captain, he retired from the Navy in 1976.