Thousands.
John Glenn was married once. He and Annie Castor were married on April 6, 1943. Together, they had two children-John David (born 1945) and Carolyn Ann (born 1947).
A fighter pilot in Worl War II and the Korean War, he received the Flying Cross 6 times.
Glenn's AwardsA fighter pilot in World War II and the Korean War, he received the Flying Cross 6 times.5
Many flew more missions than that.
14
John Glenn completed one mission as the first American to orbit Earth on February 20, 1962.
Thousands.
As of 2021, a total of 580 people have flown into space. This includes astronauts from various countries who have participated in missions to space stations, space shuttle flights, and other space missions.
As of now, there are at least three schools named after John Glenn: John Glenn High School in Westland, Michigan; John Glenn Middle School in Maplewood, Minnesota; and John Glenn Elementary School in Seven Hills, Ohio.
2
John Glenn served as the U.S. Senator from Ohio December 24, 1974 - January 3, 1999.
3
John and Annie Glenn had two children : John David Glenn (born 1945) and Carolyn Ann Glenn (born 1947), and reportedly 2 grandsons. But at their ages, either or both siblings could be grandparents themselves.
About 5,000 Ryan Firebee UAV missions were flown over enemy territory (North Vietnam) during the war.
A total of 355 individuals have flown in the space shuttle program, which operated from 1981 to 2011. This number includes astronauts, scientists, and civilians who participated in various missions during the program's duration.
A total of 24 US astronauts have been to the Moon, and 12 have walked on its surface. There were a total of 27 astronauts on 9 Apollo lunar missions, but three of these went twice. (see related question)