A professor of mine was giving a speech at a UAW plant near Toledo. He taught manufacturing concepts, supply chain mgmt, etc. He was carrying a box with a few folders, a couple handouts (the stuff he needed for his speech). He walked into the plant he was told to put the box down or there would be a grievance filed. They wanted to have a union material handler carry the box...it would get to the conference room eventually. He walked around and went in through an office entrance. If the stuff was in a briefcase and not a box I don't think it would have been an issue. The UAW is a joke.