The Air Force says Northrop Grumman hasn't improved the quality or speed of maintenance on E-8C Joint Surveillance Target Attack Radar System jets despite efforts to nudge the company along, although Northrop argues it is taking steps to better its workflow. "Last year's [total system support responsibility] contract incentivized reducing flow days/work in progress and depot quality," Col. Ray Wier, who leads the command-and-control, intelligence, surveillance and reconnaissance division of the Air Force Life Cycle Management Center's battle management directorate,...