Everything was "perfect," Hyten said, until "somewhere in flight, we saw an anomaly, and the anomaly was going to create an unsafe flight condition, so we destroyed the rocket before it reached its destination. It was the smart thing to do."

https://www.military.com/daily-news/2018/08/01/air-force-destroyed-unarmed-icbm-test-gone-wrong-stratcom-chief.html/amp?__twitter_impression=true

One thing is for sure, though: If the Air Force continues with the policy of sprinkling 400 hydrogen bombs across the country in underground silos, those nukes need the best protection possible, and a new helicopter is essential in providing adequate security

https://www.popularmechanics.com/military/aviation/a22698581/the-air-force-wants-helicopters-to-help-defend-nuclear-missiles/