What happens to a human body when it’s pushed to the edge of survival? Imagine that you are in your car on your way to the emergency department for your next shift. A man on a motorcycle passes you, darting into and out of oncoming traffic. He’s probably going 60 miles an hour on a two-lane street. Up ahead of you now, you see his back wheel clip the edge of a car. The motorcycle spins out of control and slams into a concrete utility pole. What do you do?