David Glenn, son of former astronaut and U.S. Senator John Glenn receives the folded American flag from the Commandant of the U.S. Marine Corps, General Robert B. Neller, during a graveside interment ceremony at Arlington National Cemetery on Thursday, April 6, 2017 in Virginia. He was the first American to orbit Earth on Feb. 20, 1962, in a five-hour flight aboard the Friendship 7 spacecraft. In 1998, Glenn broke another record by returning to space at the age of 77 on the Space Shuttle Discovery. Photo Credit: (NASA/Aubrey Gemignani)