A drone in full gear cannot communicate normally. The gas mask blocks facial expression entirely. The protocol language they are operating in does not include a vocabulary for 'something is wrong' beyond pre-arranged emergency signals. The Operator cannot ask how they are doing and expect a meaningful response from within drone space.
What the Operator has instead is the body — which is, in drone space, a more honest instrument than language.
Posture and precision are your primary signals. A drone executing tasks with clean, precise movements — the mechanical efficiency that characterizes good drone space — is functioning well. A drone whose movements become imprecise, hesitant, or who breaks protocol posture without command is showing you something. The quality of execution degrades before anything else does.
Breathing, visible through the gas mask's valve, tells you about arousal level and physiological state. The hiss of the valve at a slow, consistent rate: the drone is stable. Accelerating breath without a commensurate physical cause: something is shifting.
Stillness quality. A drone in proper idle processes is still with a quality of operational readiness — potential energy, not collapse. A drone whose stillness has a different quality — rigid rather than ready, collapsed rather than poised — is showing you physical discomfort or early signs of distress. Distinguish between them.
The pre-arranged signal — an object to present, a specific gesture executable even with gloved hands — is the circuit breaker. Establish it before the session. It is the one channel through which the drone can communicate across the boundary of drone space when something is genuinely wrong.