Was riding solo last night at Cherokee and came across a group of three guys at the beginning of No Net. One of the bikes was sitting upside down, wheels up in the air, which is the telltale sign of "something is screwed up." I asked the guys if they needed help and one replied "You have a chain tool?", to which I responded "Yep." His followup question: "You know how to use it?"
The poor guy had mangled one of the chain links on his brand new bike and in a few minutes we were able to doctor it up and get him back on the trail. There's nothing worse than walking when you want to be riding!