On Thursday, December 10, 2020 at 9:57:45 PM UTC-5, Gregg Ballou wrote:
On Thursday, December 10, 2020 at 8:55:45 PM UTC-5, AS wrote:

If you have a chance to take a high altitude chamber ride, do it. I think the one at Wright Pat is no longer in operation, so if anyone knows where one is that is accessible to civilians, chime in.

AMEN!! I was lucky back in the dark ages to have had that experience in a chamber at Andrews AFB when it was open to civilians, and I had a very similar experience with the worksheets!! Sure made a believer out of me! IF you EVER get a chance for that experience, for heaven's sake take it!!
I don' t "fly high" any more, but I still take my oximeter with me and if it drops below ca. 95%, I just come down . .