Delays to development of the next-generation Global Positioning System's ground segment could have considerable implications for the entire GPS enterprise, according to the Pentagon's top weapons tester. In his annual report on Defense Department operational test activity, Director of Operational Test and Evaluation J. Michael Gilmore raises several concerns about sustainment and modernization of the GPS enterprise -- concerns he initially raised with the Pentagon back in November. The report has not been released publicly but was obtained Jan. 16...
