I was recently in Dallas, Texas, and I went to visit an individual who was a Rotarian, a major donor to the Rotary Foundation, a lawyer, and he lives in an iron lung. It's hard to imagine that in today's world, there are still people that were afflicted with this disease in the '50s or so that are now still living in iron lungs because of that. The U.S. has been polio-free since 1979. But here's this individual and his main concern was the collars that help seal around the neck for this machine, and whether or not the pump might fail.