Predator drones do domestic duty
Monday, September 12, 2011 - 23:00
in Earth & Climate
In recent months, the unmanned spy planes have been put to work fighting fires and flooding. Privacy watchdogs are uneasy.Most days, U.S. Customs and Border Protection Officer David Gasho sends three unmanned spy planes into the skies over the rugged Sonora Desert to hunt for drug smugglers crossing into southern Arizona from Mexico.