A work colleague for a short period worked in Aerospace industry (yup its deliberately wide) and came across a Purchasing / Logistical issue.
Inherited a services issue where told can't be made better blah blah blah................. red rag to bull issue and with half the staff and 99% availability of key spares a year later he asked them if he had made them believers
MoD used to have posts in Service HQs which could best be described as Availability, Reliability and Maintainability Troubleshooters. Disestablished in January 1988 and never replaced. Worth their weight in gold. At the time we couldn't understand why, but with hindsight the decision makers knew the 3rd line workshops were being privatised, so MoD would no longer have people being trained to do this; and, indeed, very few are now employed at the grade. That doesn't excuse just ignoring the need for the work to be done.