U.S. Marine Corps (1921-2016): One of NASA's seven original Project Mercury astronauts, John Glenn was the first American to orbit the earth, circling it three times in his "Friendship 7" capsule on February 20, 1962. A decorated fighter pilot, he flew 59 combat missions during World War II and 90 combat missions in Korea. After the Korean War, he served as a naval test pilot, accomplishing the first transcontinental supersonic flight in 1957. After retiring from the Marine Corps in 1965, Col. Glenn pursued a successful career as a businessman and politician. Elected to the Senate in 1974, he served four consecutive terms as a Democrat from Ohio. In 1998, Glenn returned to space on a nine-day Space Shuttle Discovery mission — becoming, at age 77, the oldest person to go to space. John Glenn died in 2016 at the age of 95. His many honors include six Distinguished Flying Crosses, the Air Medal with 18 Clusters, the NASA Distinguished Service Medal and the Congressional Space Medal of Honor. (Section 35, Grave 1543)

Lt. Col. Virgil Ivan "Gus" Grissom was killed on January 27, 1967, along with fellow astronauts Lt. Cmdr. Roger B. Chaffee and Lt. Col. Ed White, in a fire aboard the Apollo 1 spacecraft during a launch rehearsal at Cape Canaveral, Florida. Selected as one of the original "Mercury Seven," Grissom was an accomplished fighter pilot who had flown 100 missions during the Korean War and subsequently tested fighter jets for the Air Force. On July 21, 1961, he became the second NASA astronaut in space (after Alan Bartlett Shepard Jr.). When he piloted Gemini 3 on March 23, 1965, he became the first American to venture into space twice. He was assigned to command the first crewed Apollo mission. Grissom is buried next to Roger Chaffee (see below). (Section 3, Grave 2503-E)

A member of NASA's Group 3 Astronaut Class, Maj. Charles A. Bassett II was scheduled to fly Gemini 9 in the spring of 1966. On February 28, 1966, Bassett and Gemini 9 command pilot Elliot See died when their T-38 supersonic training jet crashed at Lambert Field in St. Louis, Missouri. Bassett and See are buried near each other. (Section 4, Grave 195)

A U.S. Air Force test pilot and aeronautical engineer, Capt. Theodore Freeman was selected to become an astronaut in 1963, as part of NASA's third "class." On the morning of October 31, 1964, he was piloting a T-38 supersonic jet trainer that crashed while returning to Ellington Air Base. Freeman was the first American to lose his life in the space program. (Section 4, Grave 3148-LH)

Charles F. Shoemaker became Chief, Division of Revenue Cutter Service on March 19, 1895. He remained as commandant until he reached the statutory retirement age of 64 in 1905. He is interred in Section 3.

NASA Group 3 Astronaut class member Maj. Clifton C. "C.C." Williams served as backup pilot for the Gemini 10 mission in 1966. On October 5, 1967, as Williams was flying to visit his parents in Mobile, Alabama, his T-38 jet crashed in Florida following a mechanical failure. At the time of his death, he was training to be a lunar module pilot for a future Apollo mission. (Section 3, Grave 2503-H-1)