The Pentagon's top weapons tester is concerned that delays to the Joint Space Operations Center Mission System modernization effort could lead to cost and schedule delays for the Air Force's new ground-based, space-observing radar, Space Fence. The Pentagon last summer reported a critical change for the second increment of the JMS upgrade, which is meant to significantly improve the Air Force's ability to catalog and track space objects. At the time, the program adopted a new $462 million cost estimate,...