Spent the weekend canyoneering in the Sierras again, and got to experience my first Search and Rescue operation (spoiler alert: everything ended well). Me, Brian Swanson, and Bronic Bednarek did Lower Jump in the North Fork of King's River (we did Upper Jump the day before and had a blast!). About 2h into the canyon, Brian breaks his ankle on a slide into a pool. Bronic and I did the slide without incident, but it was a rather fast and bumpy ride. I got some nice air on a small ledge half way down. The same ledge that Brian jammed his foot straight into... Fortunately, Brian had an emergency SOS transceiver, which we immediately activated, since there was no way he could move, or we could carry him, either up or down the very technical terrain in the canyon. Bronic went ahead to finish the canyon solo(!) and get out and get help, in case the transceiver didn't work. I stayed with Brian. Turns out he's a great guy to spend a day in a canyon with, and we kept our spirits up 3.5h later, a Fresno Sheriff's department helicopter shows up. They fly around to survey our location and we were able to communicate that we needed help. We later found out that they took video and photos and forwarded them to the SAR team. A while later, a NFS ranger shows up. He had found a dry but rather dangerous way down to us. He stayed with us and coordinated the rescue. A little later, a CHP airlift helicopter arrives. They fly deep into the narrow canyon and lift out Brian. It was very impressive to see. I hiked out with the ranger, and Bronic made it out the bottom. He almost got stuck himself several times, and had quite an adventure, about 9h to the bottom from the incident location. I made a map of the route that we hiked out and the spot of the incident. http://www.trimbleoutdoors.com/View...tLinkKey=5585d933-47ec-47b3-9799-40f380e22e10 In hindsight, it would have been better for me to go scout out the exit on the side, and climb out to get help. About 2h and not very dangerous, as opposed to the all day solo descent. Lessons learned: Bring an emergency transponder. Don't do questionable slides in remote locations. Check for exits on the sides. It would also have been nice to have at least 4 people: One to stay with the victim, and two to go for help.