Greg, a few years ago was service manager at a different shop. A customer came in with a problem after having been in earlier in the day and when it was diagnosed he wanted to talk to the technician who had worked on his car earlier that day. The customer who had something simple like an oil change done but now had an intake leak and needed a large repair. The guy was about 6'-5" and about 280 and the technician was about 5'-7" 150 pounds. Before Greg realized what was going on the customer was blaming the technician and threating him and it was getting heated. Greg walked out to where the guy was, stopped off to his side looking up at him smiling. When he caught the customer's eye the guy said, "what are smiling at?" Greg says, "I am just wondering how you will look stretched out on this shop floor?" The customer looked Greg up and down, never said a word, and walked out of the shop. The next day the customer called, apologized, and had them fix his car.
It is nice having a Ranger on staff.