Quis Custodiet Ipsos Custodes?

Attributed to Juvenal,a this title phrase translates to "Who will watch the watchers?" In the 21st century, we may well ask this question as we invest increasingly in machine learning methods, platforms, applications, and designs. Nowhere is this more evident as we see increased excitement and investment in artificial intelligence (AI) for military application. In some ways, this is an old story. Early computers were used to improve the calculation of ballistics settings and, with the invention of radar, automatic fire-control systems became important parts of offensive and defensive systems.