A few years ago, the old diesel Suburban had an injector problem, and couldn't make it up a hill. A towtruck operator hooked it up, and winched it up onto a flatbed. Just as the 'burb reached the top of the flatbed, the winch gave way, and the truck went flying backwards off the flatbed with the winch cable still attached. The driver went running downhill, after the truck, and I ran and dove under the front bumper of the flatbed, expecting the 3-ton 'burb to snap the winch cable, which would then snap back and cut the driver in half. Fortunately for him, the front wheels of the 'burb hit something, and the truck turned and smacked into a guardrail, backwards, at about 30 mph.
The 12x20 Korona and the No 10 Cirkut, both in their Pelican cases, and the V8 Deardorff, in its' Calzone case, as well as the two Orvis reel cases full of lenses were thrown every which way, landing on their sides, upside-down, etc. Everything survived absolutely intact.
I considered it a near-death experience.
Charley