Yes, Mr. Glenn was a true American hero. He led a long and extremely interesting life. RIP to a great American.
FYI, several of my cousins graduated from John Glenn High School in Westland, Michigan. I was actually attending a high school basketball game at that school when the U.S. beat the U.S.S.R. in the 1980 "Miracle on Ice" Olympic hockey game. The score was announced during the basketball game, and the entire crowd began chanting "USA! USA!".