( Editor's note: This story was updated on May 14 in response to information provided by an Air Force spokeswoman to note that construction is planned for Oregon only, not Idaho and Nevada. Also updated is information on total acreages planned; much larger than the 1,490 acres in the original story.) The Pentagon is pressing ahead with detailed plans for a new network of long-range, Over-the-Horizon Radars to protect North America, even as rising trade and political tensions with Canada...