Down where Fort Street runs toward the bridge the sky is enormous, and the weather announces itself early — you can watch it cross the river before it ever reaches the block. Hernandez Services Inc. works on both sides of that sky: mowing, edging and trimming through the green months, plowing, shoveling and salting drives and walks once the cold takes over. The properties do not change, only the tools on the trailer and the hour of the morning. Grass that stays even all summer and a driveway that stays open all winter add up to the same thing — a place somebody is clearly looking after. That is the aim, twelve months of it.