"So unlike having to convert, you know, all the cars' or all the lorries' petrol stations, once you've actually got the clean fuels, it's relatively easy to, you know, get it to the airplanes."

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I was taking my advance freefall course, doing my level 1 jump. My heart was racing. Like I said, I have a lot of fear with falling, so I panicked. Then I let go of the door of the airplane and kind of panicked the entire way. But after a few jumps I grew more calm, realized what was going on, and I think that was the key. The more calm I got, the more relaxed I was.

— Dean Potter