These guys wingsuited into a moving plane, and so many things could have gone wrong

This will put your heart in your throat.

Normally I’ve got a pretty strong stomach for extreme sports videos — except when it comes to heights. This one has me shook.

Red Bull’s new video, titled A Door In The Sky chronicles BASE jumpers Fred Fugen and Vince Reffet, known as the “Soul Flyers,” and their attempt to jump off Jungfrau mountain in Switzerland and land in the fuselage of a moving plane.

It doesn’t take a genius to work out everything that could go wrong here. They’re aiming for a moving three-foot window while traveling at over 80 miles-per-hour. The smallest miscalculation and they hit the plane, which could result in any number of horrible things — but the pair nails it.

There a reason everyone is talking about this video. It’s totally bananas. Wingsuits are terrifying.