My neighbour and I decided to throw a party for the kids in our neighbourhood. It was neither a birthday nor Christmas party, but several of the children in our neighbourhood are from poor families and seldom get the chance to have fun with their peers. We prepared loads of sandwiches and drinks and two parents contributed cakes. Balloons, paper cups and a few decorations came courtesy of the P.T.A. They also provided the music and venue and what every child, and even some adults, so love – a clown! Things got off to a great start at about five o’clock that evening. Almost every child in the neighbourhood was present. Though it was springtime and the weather was usually quite cool, we were taking no chances with climate control. My neighbour and I personally persuaded one part who is an HVAC supplier, to tuneup the HVAC unit in the space we would use for the party. His response was that he had installed that particular HVAC system himself and didn’t think it needed servicing. Still, he would send one of his techs to check it out, just to be sure. It was almost eight o’clock and the children were dancing and really enjoying themselves. Suddenly, there was a change in the temperature and the space began to feel hot and sticky. I even noticed that the make-up on the clown’s face was beginning to melt. Obviously, the HVAC unit had stopped working. In a panic, I called up the HVAC supplier to find out if the unit had been check on by any of his service men.