On fear of "exposure" or to give it its technical name "acrophobia"...
So I'm afraid of exposure? Because wherever I look acrophobia is the fear of heights...
I jumped 50 times with barely a worry... I used to love the balloon jumps - front somersault and all. I had no problem standing on the external step of the Puma as we began an approach to No-Name Rebro in Belize, (about 1000'AGL).
But now I won't stand on the glass floor in the CN Tower in Toronto, (about 1200'), and I have "nightmares" from time to time where I am on a very narrow and high, (often only high enough to do severe damage), ledges, or similarly "awkward" situations and I'm petrified - I always "freeze up". I often wonder if I had a monkey harness or a parachute whether I would suffer the same illogical fear...