When I was doing factory stuff, I regarded things the same as lawful/unlawful orders under the UCMJ. One instance in particular, the supervisor frantically asked what I was doing stopping production to adjust stops. I told him that the parts were out of spec and that we'd be good to go as soon as I was left to do what I needed to do. When he asked "How far out of spec are they?", I answered with something like "follow the bouncing ball, man. They're OUT. OF. SPEC." He started foaming at the mouth about "we need these parts now, blah, blah, blah". I then explained it in business terms that the parts would come back if someone measured them and they'd be needed even more urgently in addition to scrapping material. I told him that if he wanted to run junk, he'd have to sign off on it because my name wasn't going to be associated with it. He wasn't happy, but ultimately accepted that my stance was firm and let me do my job.