A $20 million pilot program to safeguard a 28-mile stretch of rough, mesquite-dotted terrain that straddles a smuggling corridor south of Tucson was supposed to be operational in June but now is expected to be delayed until the end of the year, according to the officials at the Department of Homeland Security who are overseeing it. Ground radar and cameras that were to identify illegal border crossers so that armed patrols could be dispatched to capture them have had trouble distinguishing people and vehicles from cows and bushes. The sensors are also confused by moisture, the officials said. |
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