Came close a couple of months ago when I snapped the chain on my commuter bike, I did not have a chain breaker or spare link, and since I was not able to contact anybody to get a ride, so I HTFU and walked the bike home with over 70 lbs of cargo on board.
I now have a multi tool that has a chain breaker, and I now carry a spare chain link was well.
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Prisoner No. 979