Developmental testing on Northrop Grumman's RQ-4 Global Hawk revealed the MS-177 sensor's electromagnetic interference could lead to false signals intelligence reporting, the Pentagon's director of operational test and evaluation wrote in his fiscal year 2017 report released this week . Over the past two years, Northrop and the Air Force outfitted the RQ-4 with two new sensors and a modular payload adapter to reduce risk before adding UTC Aerospace Systems' MS-177, meant to surpass the high-resolution, long-range imagery capabilities of...