Story code: ST-001204
Part 2: The Boundary Flight
The following afternoon, the heat of the sun baked the suburban backyard, and the metallic rattle of Arthur’s plumbing echoed again from the other side of the fence. Clara sat at the patio table, her laptop open, while Julian adjusted the flow meters on his solar-hydroponic array. Through the wooden slats, Arthur could be seen walking back and forth along the property line, a wrench dangling from his back pocket.
Arthur stopped near the middle post of the fence. “Hey, Julian,” he called out, his voice raised over the hum of his malfunctioning pump. “You busy?”
Julian did not look up immediately. He finished adjusting a brass valve, waited for the pressure gauge to settle at exactly fifteen pounds per square inch, and then turned his head. “I’m working,” Julian said.
Arthur leaned against the fence, his eyes scanning the layout of Julian’s manifold. “Right. Hey, I’m running into a minor calibration issue on my new setup. The grant committee wants to see the zones cycle automatically, but every time the secondary line kicks in, the primary collector loses head pressure. What kind of regulator did you install on your bypass?”
Julian wiped his hands on a rag. “The blueprints I drew up use a pressure-compensating diaphragm regulator. It balances the zones automatically based on flow resistance.”
“A diaphragm regulator,” Arthur repeated, nodding slowly. “And where exactly did you place it in the sequence? Before or after the backflow preventer?”
Clara stepped down from the patio, holding her clipboard. “The design details are proprietary, Arthur,” she said, her voice even and firm. “Just like the ones you submitted to the grant board.”
Arthur shifted his weight, his face darkening slightly. He cleared his throat, avoided direct eye contact with Clara, and stepped back from the fence. “Just trying to be neighborly,” he muttered before walking back toward his deck.
An hour later, the familiar high-pitched drone of the quadcopter filled the air. Clara looked up, watching the silver drone rise from Arthur’s yard. This time, it did not ascend to its usual altitude. Instead, it drifted low, crossing the wooden fence line at a height of barely twelve feet. Arthur stood on his deck, shifting his feet, eyes darting from the remote screen to the fence. The drone’s rotors whined as he pushed the controls forward, attempting to steady the hover. The wind was steady, blowing from the west at ten miles per hour. Clara watched the drone’s gimbal adjust, its optical zoom lens visibly extending to capture the tiny print on the pressure valves.
The drone hovered directly over Julian’s pressure manifold. The camera gimbal on the undercarriage tilted downward, adjusting its focus. It hovered there, buzzing loudly, moving closer to the custom valve assembly to capture a clear image of the model numbers and pipe routing.
A sudden gust of wind swept between the two houses. The drone bobbed violently. Arthur, standing on his elevated deck with his controller, jerked his hands. The drone lurched sideways, its plastic rotors clipping the low-hanging branches of the Vance family’s maple tree with a sharp, snapping sound.
The aircraft spun out of control, bounced off the top rail of the wooden fence, and crashed face-down into the soft soil of Julian’s vegetable garden. The motors whined in protest for three seconds before cutting out completely.
Julian walked over to the garden bed and picked up the damaged drone by its landing gear. Its camera lens was still blinking green, indicating an active recording session. Across the fence, Arthur stood on his deck, his remote controller silent in his hands, his face pale as he stared at the fallen machine in Julian’s grip.
Julian carried the drone to the patio work counter. He did not look back at the fence line.