What strikes me about your account is the proximity of physicians and nurses to the scene. I have had the same experience on several similar situations,. including an archaeological convention some years ago, where my good friend and project assistant went into a totally unexpected grand mal seizure. I raced to his side, and barely beat an RN. How do they do it and what was an RN doing hanging out with diggers?

This has not been a unique experience....

Really is cool, isn't it, becoming an Old Hand.....