It happened to us on one of our off-road adventures. The WJ was all loaded up with dogs, a canoe, camping gear, the wife, and other stuff. We were headed up one of our favorite local trails over a flexy section, when one of the front coils fell out. This sucks, but it’s a fairly easy fix if you know what you are doing. Usually Jeep coils are retained by an upper stem and a lower clamp on spring retainer. If the lower clamp is missing, or your Jeep does not have an upper stem (like on our WJ) the spring can fall out more easily.