Question about towing bad experiences!

[Pmedic4]

Just reading several posts about 'hitch failures', 'power to break-away switch', and 'others', and was just wondering if anyone has had or know of someone who their RV come free:
1. What speed were you going?
2. When did you notice?
3. What failed?
4. Did the break-away switch work?
5. How did the RV react? Did it stop in a straight line? Skid sideways? Roll and crash / Crash and roll??

Have a hard time believing this would happen at full highway speed, with most happening when your just starting out, but then again, it is possible.

Not trying to pick on anyone, just hoping someones experiences might prevent a catastrophe for others. Personally, as a firefighter/EMT, the one situation I was aware of was a car being towed by a Tow-truck, came loose, went across the median on the interstate and struck another car -with fatalities. Not one of my favorite stories, but also no break-away switch to stop it from the mayhem.