We called Mother with some urgency to help us locate a main water shutoff value to our house. We needed to shut off water to replace two water heaters; preferably ahead of a winter storm scheduled to arrive the next day. Marcus arrived the same day while the water heaters were being installed. We'd managed to shut off water by that time. One of his first questions was whether or not the water heaters were going to be installed in series or parallel? We had not called Mother about the water heaters, they were installed in series, and so I asked in response, why does it matter? He went on to explain the differences so well it sounded like common sense. He even anticipated a potential issue with a series arrangement that we'd just experienced but that I had not conveyed to him. To me, it signaled that he was knowledgeable, experienced, and cared about work being done the right way. I appreciated the quick response when we needed help and the experience of working with Marcus. I look forward, as much as anyone can, to the next opportunity to call on Mother.