Why Government Oversight is Necessary

The most recent audits of the Kingman prison in Arizona, the one operated by MTC that 3 murderers escaped from, found no significant issues with staffing or security that would have affected the escape.  They scored a 99.5% on the audit from this year, in fact.  One of the few problems it did find was that the prison didn't stock enough gas guns to quell a riot.  But these audits clearly weren't sufficient to detect a faulty alarm system (alarm systems aren't an integral part of security?) or the poor operational practices that led to the prison being understaffed.  I guess that all would fit within the 0.5% they missed.