LANCASTER, California—Northrop Grumman has completed all hardware installation for the delayed B-2 defensive management system modernization (DMS-M) upgrade on the initial test aircraft and is preparing to begin evaluation flights.  The extensive upgrade package includes a digital electronic support measures (ESM) subsystem, new ESM antennas and updated cockpit displays and processing units to improve threat radar detection and crew situational awareness. The DMS-M, which was ...


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