On routine written tests, the Minot group did exceptionally well until the spring of 2013. In assessing the problems at Minot, the Air Force produced an analysis of test data that showed that in the two years prior to the March 2013 inspection, 87 percent of all tests resulted in perfect scores. In the three months following the weak inspection, 46 percent of test scores were perfect, including just 20 percent in May.
It also found that errors on monthly written tests and errors on launch control simulators soared after the March inspection. In the 10 months of written tests prior to its inspection, the Minot missileers had a total of 162 “job performance requirement” errors, which are mistakes on what the Air Force considers essential tasks. In the three months following the inspection the total doubled, to 321 errors, according to the data analysis.
Air Force officials did not immediately respond to requests for comment.