How top cave diver Jill Heinerth keeps calm under pressure - CBC.ca

CBC.ca
How top cave diver Jill Heinerth keeps calm under pressure
CBC.ca
It could be tempting to assume, after more than two decades in one of the riskiest jobs around, that cave diver Jill Heinerth is fearless. In fact, the Ontario native feels fear every time she descends into an underwater cavern — and that`s a good thing.