Centralia was laid out around a railroad, and its trees grew up along the same straight lines — silver maples down the old brick blocks, oaks and elms ringing Foundation Park. Weaver Tree Service does its shaping in the cold months, when the leaves are down and every crossing branch shows plain against the sky. Winter pruning sets a tree up for the year, trimming keeps a crown off the roof and the walk, and removal takes care of the ones the last decade already decided about. When a line of storms rides through on a spring night, they are out at first light clearing the yard, the alley and the driveway that has to be usable by seven. Ordinary attention, the kind a town only notices when it stops.