I have been to Skydive the Ranch http://www.skydivetheranch.com/ in Gardiner many times.  Not to jump, but to watch.  It's is alittle crazy to jump out of a plane from 13,000 feet, but not that crazy.  Felix Baumgartner jumped from 127,000 feet back in 2012.  Now that's CRAZY!  There still is new footage coming out and this one is in HD, so you almost feel like you are in outerspace.  Where is Sandra Bullock when I need her?  Part of this video was used as a Big Game commercial, but this is a longer look.  Watch Felix go into an uncontrolled spin at about 700 miles per hour during his freefall.