AC ducts on the floor?

We walked into the old dilapidated building that looked like a hideout for the mafia. Rudi with his shaven head, shades and the suitcase actually looked like a henchman here to fix an underworld deal. The first floor was completely empty. The walls did have some kind of ledge space where there were lots of motionless pigeons. When I strained my eyes I could see that most of them were dead. The others seemed to be in mourning. We had to get to the fourth floor. We reached the lift and there was something scrawled in Flemish. 'Lift is unreliable, take the stairs' Hans translated it for me. The staircase, in its glory days (sometime around the second world war) must have been a fire exit. The second floor was empty too. The third floor, I was told, had been a cigarette factory sometime back and it still reeked of tobacco. The fourth floor door opened to a long passageway with a huge AC duct right on the floor. There were rooms on either side and all of them had their doors ajar to let in the smaller ac ducts. All these little ductlets were blowing air into the rooms and were flaying about like tentacles, you know due to Newtons third law and all. The room that we had to go to was at the end of the passage. There the tentacle was subdued by two cans of water. We had to step over them and get into the place. We had entered the server room of Mobistar, Belgium's second largest mobile operator. I should have believed them when they told me Belgium is a weird place.