Every CUAS program has a test and evaluation phase. Numbers get produced. Reports get written. Programs advance to the next gate. Then, six months later, the adversary drone landscape has shifted enough that the T&E results describe a threat that no longer exists.
The problem isn't the T&E methodology. The problem is that the T&E harness — the data, the scenarios, the labeled ground truth — was built as a one-time artifact rather than a living system. When the threat evolves, the harness doesn't, and the numbers age out.
What A Living T&E Harness Looks Like
A useful T&E harness has four properties. It's versioned — every result ties to a specific version of the test corpus, and old versions stay accessible for regression comparison. It's extensible — new adversary platforms and new scenarios can be added without invalidating prior evaluations. It's traceable — every scenario in the harness has clear provenance for how, when, and where it was captured. And it's calibrated — ground truth labels are audited on a rolling basis, not written once and trusted forever.
Most CUAS T&E harnesses are none of these. They are a folder of clips someone put together for a specific test event, sometimes labeled inconsistently, with no plan for how they'll get refreshed. The result is that the T&E number for version 3 of the model is not directly comparable to the number for version 1, because the test set drifted between them.
The Data Supply Chain Underneath
A harness that stays current needs an upstream supply of new scenarios on a predictable cadence. When a new adversary platform emerges, the harness needs footage of it — captured under representative conditions — added within weeks, not quarters.
That's a data vendor relationship, not a one-time procurement. The vendor needs to be able to spin up a targeted collection against a specified platform on request, deliver it tagged and audited, and integrate it into the harness on a schedule the T&E team can plan around.
A T&E result that took six months to produce and describes a threat from twelve months ago is not useful. It's a compliance artifact.
The programs that get this right treat their T&E harness as an operational asset with its own budget, its own owner, and its own data-supply relationships. The programs that don't end up shipping models on the strength of numbers that were true when the report was drafted and less true every month after.