Two BASE jumpers used a custom-built human catapult inside a nearly 1,200-foot chimney to set two Guinness World Records for vertical mechanical launches. [▻]

Two BASE jumpers used a custom-built human catapult inside a nearly 1,200-foot chimney to set two Guinness World Records for vertical mechanical launches. [▻](https://video.twimg.com/ext_tw_video/2119799014350557184/pu/vid/avc1/720x1280/_0DErSbxTGNKEOoN.mp4) https://video.twimg.com/ext_tw_video/21…