Mid-July, Saturday, mid-morning: Roosevelt Park is full of ballgames and shade, and half of Longmont is standing out front squinting at its own yard. M.R. Lawn Services llc spends those weeks mowing, running the string trimmer down fence lines and edging walks so a lawn ends exactly where it ought to. Grass a mile above the sea grows hard and fast once it is watered, then wants cutting again before the mower is fully cooled off. Keeping to a schedule is how nothing gets away from anybody in the middle of a Colorado summer. Clean lines, clippings gone, gate latched on the way out.