Per the link in post #1, the China Southern flight was being towed and was the perpetrator. In Toronto, a similar situation. Does this mean we should trust pilots more than tow drivers? Or are these cases, rather, of the pilot doing nothing and so being able to safely blame the other guy? (I was just settin’ there mindin’ my own business and she run right into me” (channeling Ray Stevens’ “The Streak”)) ? Does anyone license the tow boys? Convenient for the pilots if the answer is “no”.