Minuteman III ICBM Destroyed During Test Launch 1 Aug 2018 https://www.military.com/daily-news...rmed-icbm-test-gone-wrong-stratcom-chief.html There are typically four Minuteman III test launches per year. This failure, one on 2011 and one in 2009 means 3 over 9.5 years. 3/(4/yr * 9.5yr) = 0.079 = 7.9% failure rate. For rocketry, that really sucks. 450 deployed missiles x 0.079 = 35.5 launch failures during an all-out nuclear war. Damned lucky we have so many!