![Northrop Grumman Sentinel test firing](/sites/default/files/styles/crop_freeform/public/2024-01/sentnel_test_fire_northrop_grumman.jpg?itok=54c3D6A-)
Northrop Grumman and the Air Force test-fire a rocket motor for the LGM-35A Sentinel.
Credit: Northrop Grumman
Congressional leaders are planning to increase oversight of the U.S. Air Force’s massive intercontinental ballistic missile (ICBM) modernization program after the service declared a major cost rise, prompting a mandatory review of the need for the Northrop Grumman LGM-35A Sentinel. The Air Force on...
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