PHOENIX - You may not know it, but there is a stealth surveillance system watching over Arizona, and there's a controversy brewing about its cost and effectiveness.
The system is a kind of aircraft that monitors who is crossing the border into the United States.
The aircraft is called the Predator B.
It is an unmanned aerial vehicle – or UAV – that a team of U.S. Customs and Border Protection agents use to patrol the border between Arizona and Mexico.
There are currently three Predator B aircraft being used in Arizona – more than any other state.
The aircraft is operated remotely by pilots located inside a small trailer on Fort Huachuca Air Force Base in southern Arizona. It is nearly silent and undetectable from the ground, and can patrol in complete darkness. From high up in the sky, the Predator’s cameras can locate border cros
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