U.S. Air Force GPS 2F Launched Atop Atlas 5

摘要

The U.S. Air Force successfully launched its fourth GPS 2F satellite from Cape Canaveral Air Force Station, Fla., May 15. The story "U.S. Air Force Weighs Faster Move from GPS 3 to New Generation" [May 13, page 7] should have said that Lockheed Martin says launching GPS 3 satellites two at a time - as proposed for the ninth satellite and beyond - would save $50 million per satellite in launch costs. The Commentary piece "Was Henry Ford Ⅱ Right on Transmission Demand?" [May 13, page 19] should have said writer Roger Rusch met with Henry Ford Ⅱ in 1976.