Marines assigned to Marine Barracks Washington, and members of the Army Caisson Platoon, part of the 3rd Infantry Regiment, escort the bodyJohn Glenn to his gravesite in Section 35 of Arlington National Cemetery in Arlington, Va., April 6, 2017. Glenn, a Marine who became the first American astronaut to orbit the Earth and later a United States senator, died at the age of 95 on Dec. 8, 2016. Army photo by Rachel Larue