Glenn is a former United States Marine Corps pilot, astronaut, and United States Senator. In 1962, he was the third American in space and the first American to orbit the Earth. After retiring from the Marine Corps, Glenn was elected to the U.S. Senate in Ohio in 1974. He was an architect and sponsor of the 1978 Nonproliferation Act and served as Chairman of the Senate Government Affairs committee from 1987 until 1995. In 1998, Glenn became the oldest person to visit space at the age of 77. He retired from the Senate in 1999. Glenn is a recipient of the Congressional Gold Medal and the Congressional Space Medal of Honor.