I’m curious, Larry. In your altitude chamber exposures, did they simulate both gradual hypoxia and sudden decompression? If so, were the symptoms different? I can see a gradual situation sneaking up on a pilot, but I would think a sudden event would immediately be recognized and give at least a little time to grab the mask. That’s assuming it was within reach and ready to go, not wrapped up and in a box. I haven’t had an opportunity to go through altitude training, but would definitely like to do so.