My dad had a friend that worked at the Johnson Space Center who gave me a private tour many years ago. He pointed out the room sized, high vacuum, spacesuit tes

My dad had a friend that worked at the Johnson Space Center who gave me a private tour many years ago. He pointed out the room sized, high vacuum, spacesuit test chambers and told me of a startling incident that happened once in one of the chambers. While walking around in the chamber, a tester had walked too far and had accidentally pulled the umbilical tubing from the wall. He was at that moment exposed to a hard vacuum (equivalent to that found in outer space). The safety observer immediately started emergency pressurization and the tester survived. He continued to work for NASA and ended up being in charge of safety procedures.