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The Editors

Drones in U.S. Need to Fly Within Privacy Rules: View

Consider the Qube. It’s 3 feet long, weighs about 5 pounds and can be assembled in a jiffy. It’s equipped with thermal and high-resolution cameras. It can fly all by itself, for 40 minutes at a time, hovering noiselessly at up to 500 feet. And it films all it sees.

The Qube, made by AeroVironment Inc., is one model in a growing fleet of drones -- or, technically, unmanned aerial vehicles -- now plying the skies above the U.S., piloted remotely by National Guard units and Customs and Border Protection agents, for just two examples. These machines have proved invaluable in war zones, and their expanding use domestically holds great promise.