It’s a quiet morning in San Francisco, with soft sunlight illuminating patches of thick fog billowing over the Golden Gate Bridge. A solitary unmanned aircraft—a 4-pound, battery-powered wedge of impact-resistant foam with a 54-inch wingspan, a single pusher-propeller in the rear, and a GoPro video camera attached to its body—quietly approaches the landmark.
Call them what you want—flying robots, unmanned aircraft, or drones are coming in swarms
Raphael “Trappy” Pirker controls the aircraft from a nearby hill. The bridge is within sight, but the 29-year-old enjoys the scenery through virtual-reality goggles strapped to his head...
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