I have lost it very few times on the job. But I distinctly remember being called to help out on a high rise job with trapped passengers in a blind hatch. I walk into the machine room and find the route "Mechanic????" and 2 other brethren watching this "Mechanic????" attempt to loosen spring tension on a 219 machine. (Passengers were about 20 floors down in a blind hatch, on a 70 story building..)...

Luckily he didn't have a big enough pair of channel locks, and had instead loosened all the adjustements so the brake would not pick, when I finally hunted down my rectifier box.

Yes...I lost it....I cursed him, and offered to duke it out with him, and the other 2 guys standing around watching this fiasco, fixing to happen. Don't know why I wasn't a popular fixture on that job after that..LOL...