A parking lot tells the truth about a business before anybody reaches the door. JBM COMMERCIAL LLC works that front edge in Niles Township — plowing lots and drives, shoveling entries and walkways, laying salt across the approaches, and through the green months mowing, trimming and edging the grounds. Commercial snow is a race run against opening time, and around here that can mean going back out twice before sunrise when a lake band sets up and keeps producing. Summer is steadier but no less exacting: clean lines around the islands and light poles, turf that stays presentable through the heat. The measure of it is simple — people walk in without once thinking about the ground under them.