"Systems will go through rigorous hardware and software verification and validation (V&V) and realistic system developmental and operational test and evaluation (T&E) ... to minimize the probability and consequences of failures."

The requirement comes from DoD Directive 3000.09, which sets the baseline for how the United States military treats autonomous and semi-autonomous weapon systems. It defines auditability in concrete terms: systems must be testable, verifiable, and predictable under realistic conditions.