How a typical operation can go from routine to bad to worse and why you should always carry a secondary communications device whenever you are operating alone. Watch this video to see how a climb up a hill can result in a broken leg and then a mis-step in a helicopter landing can result in a more complicated extrication. Note: notice how they are utilizing a SKED stretcher.
https://www.nifc.gov/wfstar/modules/HF/libraryHF_DeerPark.html