An argument developed at one table; a bloke who was quite drunk, who seemed to think that the couple he was arguing with had something of his. He got more and more heated and at one point picked up a heavy small foot stool and started swinging it around. No one dared come near him - he was dangerous with that foot stool.
Someone called the bouncer, and I saw him coming, a pleasant looking short but solid fellow, bounding up the few stairs with a faint smile on his face. He simply went up to the drunk and put his hand on his arm, saying a few words I couldn't hear, and the drunk calmed down immediately and allowed himself to be led downstairs and out. No violence was used or needed, but clearly the drunk could see that he had no chance against the bouncer, who seemed to radiate power, very impressive.