* John Herschel Glenn, Jr., USMC ( born 1921 ); first American to orbit the Earth, 20 February 1962
* John Herschel Glenn Jr., USMC, ( born 1921 )
0.013 seconds.
* John Herschel Glenn, Jr., USMC ( born 1921 ); first American to orbit the Earth, 20 February 1962
* John Herschel Glenn Jr., USMC, ( born 1921 )
0.013 seconds.