Grid Upgrade

The neon yellow chalk grid needed permanent boundary anchors. Right along the weathered brick mortar, I spotted three smooth, identical gray gravel stones resting near an abandoned metal soda can. I hoisted the first stone in both hands, marched it over, and planted it firmly on the northern vertex of my drawn square. Crisp snap as the rock locked onto the asphalt dust. With two more corner weights seated, a sudden alley gust whipped past—and the marked perimeter didn't budge an inch. Sector grid officially secured.