John Glenn of the Mercury Seven. Glenn resigned from NASA in January 1964. He planned to run for a U.S. Senate seat from Ohio, but an injury in February 1964 forced his withdrawal. He retired from the Marine Corps the following year. He lost a close primary election in 1970. A member of the Democratic Party, Glenn first won election to the Senate in 1974 and served for 24 years until January 1999. In 1998, while still a sitting Senator, Glenn flew on the "Discovery" space shuttle's STS-95 mission, and became the oldest person to fly in space and the only person
USNS John Glenn (T-ESD-2) USNS John Glenn (T-ESD-2) USNS "John Glenn" (T-ESD-2), ("formerly" MLP-2) is a United States Navy Expeditionary Transfer Dock ship named in honor of John Glenn, a Naval Aviator, retired United States Marine Corps colonel, veteran of World War II and the Korean War, astronaut, and United States senator. The Expeditionary Transfer Dock is a new concept, part of the Maritime Prepositioning Force of the future. To control costs, the ships will not be built to combat vessel standards and are designed primarily to support three military hovercraft (such as the Landing Craft Air Cushion), vehicle staging with a sideport ramp