Senate authorizers are asking the Defense Department for details on what it would take to upgrade the legacy GPS Operational Control Segment to match, or come close to matching, the capabilities being built into the troubled next-generation control segment development effort. In the Senate Armed Services Committee's mark of fiscal year 2019 defense policy legislation, which was released June 6, lawmakers propose language that would require a detailed report exploring whether the Air Force's legacy GPS OCS could be "incrementally...