The Sentinel ICBM has taken an important step.The stage-two solid rocket motor has been tested.Sarah Willoughby, vice president and program manager, Sentinel, Northrop Grumman: “Our successful test moves us forward for qualification testing in partnership with the Air Force. The test’s data gives us an accurate reading of our design’s performance and now informs our modeling and designs. This lowers risk and builds confidence in our approach to deliver the next-generation ICBM capability to the Air Force.”While this is good news, a potential cost overrun and delay are on the cards as per disclosures.In this video, Defense Updates reports on the Progress of Sentinel ICBM#defenseupdates #SentinelICBM #usmilitary