This union is more like a legalized robbers/civilized gangsters. All exhibitors at Las Vegas Convention Center were "forced" to use their horrible services, installing lights, banners etc. And those did not use their services would be charged 1 hour labor for 2 persons and another hour of labor for dismantling. That was $478.50, for a sign we hung up above our booth in 5 minutes. Not only that, they secretly switched things up. They used their own plug strips and extensions instead of the ones we brought to be used and later charged us equipment rentals. This group of people are there to protect their own jobs, but they are slow, not professional, not reliable. They are sure to bring U.S. economy down if they don't improve on their quality.