Probably so.(but UPS drivers are in the Teamsters Union, so who knows)
I had a career in law enforcement dealing with the public everyday. I never 'lost it' 'cause I held all the trump and didn't have to. You just have to leave your ego out of it... do your job and go home.
I was just saying that I'd love to know the story behind the relationship between the homeowner and the driver. Must be a doozey to risk your job over.