So having watched the video you suggested, and remembered the music on the original video I immediately recalled this: http://www.youtube.com/watch?v=I4U6T_BB1

So having watched the video you suggested, and remembered the music on the original video I immediately recalled this: http://www.youtube.com/watch?v=I4U6T_BB1N8 http://www.youtube.com/watch?v=I4U6T_BB1N8 These guys do the same close-proximity flying in Alps, but in wingsuits. If you only watch a bit of it, skip to 3:05 and compare to the vimeo video!