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And that is only the beginning. The OTH radar in Maine will soon be joined by similar installations in North Dakota, California and Alaska. Together, the radar systems will be able to look out for millions of square kilometers from every part of the U.S. coastline. That promises to complicate the life of any drug smuggler trying to sneak into American skies.
CHART: NOT AVAILABLE
CREDIT: TIME Diagram by Steve Hart
CAPTION: LOOKING OVER THE HORIZON