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Who did you hear this from and how did they explain it has changed?
The exact memory eludes me, I think from a recent T1 student. They said the v-drill changed in that you don't breathe down the backup (you just switch back to the primary after the right post exercise, do the isolator, and just purge and reopen the left post), but someone mentioned in passing that the s-drill was slightly different as well (or so I think).
So you're saying I'm wrong AND woefully behind the times? Shocking, good sir. Simply shocking.
Only about 2 years. They use helium now in breathing gases too don't you know![]()
That, sirrah, is preposterous. Preposterous I say. No self-respecting Harvard man would put that in his body. Why, the loathesome gas would cause even a robust specimen to squeal like...like a Yalie. Noble gas indeed. To even consider it strokes of pharmacological fancy.