Astronaut John H. Glenn, Flight Surgeon Dr. William Douglas and equipment specialist Joe Schmitt leave crew quarters prior to the Mercury-Atlas 6 (MA-6) mission. Glenn carries a portable ventilation unit. Image credit: NASA
Astronaut John H. Glenn, Flight Surgeon Dr. William Douglas and equipment specialist Joe Schmitt leave crew quarters prior to the Mercury-Atlas 6 (MA-6) mission. Glenn carries a portable ventilation unit.Image credit: NASA