The Yuma section has worked very well.
The Yuma section has worked very well.
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"In a pilot program in Arizona, it cost about $1 billion to build the system across 53 miles of the states border"
"Boeing had built a complex system of sensors, radars and cameras mounted on towers that was supposed to lead border agents to the exact location of illegal crossers. But the system functioned inconsistently in the rough terrain along much of the border."