All Clear Signal

A procedural audio signal broadcasting through the bridge's intercom system for missile drill coordination

4 appearances

Appearances in the Narrative

When this object appears and how it's used

4 moments

S21E1 · Warriors of the Deep Part 1

Real crisis erupts during missile drill

The procedural audio signal for the all-clear is issued precisely as Maddox collapses, underscoring the absurdity of its timing. Vorshak’s immediate override—keeping the base on full alert—nullifies the signal’s intended closure, transforming it into a backdrop for escalating tension rather than a resolution.

Before: Audible and enacted automatically to conclude the drill

After: Suppressed mid-broadcast; its purpose negated by command override

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S21E1 · Warriors of the Deep Part 1

Maddox collapses after failed sync attempt

The all-clear signal blares through overhead speakers, its three modulated tones promising routine completion, but Vorshak’s override reasserts sovereignty over systems and personnel. The signal’s procedural authority is abruptly suppressed to maintain full alert, locking the crew in perpetual tension.

Before: Three short modulated tones announced the formal end of the drill.

After: Signal overridden; base remains locked in full alert irrespective of drill conclusion.

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S21E1 · Warriors of the Deep Part 1

Crew faces base vulnerability after Maddox collapse

The all clear signal triggers premature relief among the crew, only for Vorshak to override its conclusion by imposing continued full alert. Its mechanical tone becomes a symbol of institutional deception, promising safety that does not exist.

Before: Three modulated tones marking the formal end of the missile synchronization drill

After: Silenced without proper conclusion as the base remains locked in maximum alert, destabilizing crew morale

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S21E1 · Warriors of the Deep Part 1

Doctor recognizes Sea Base Four

The All Clear Signal is mistakenly recognized as a procedural end to a drill, but the Doctor's intervention clarifies its true implication: it is a false signal in an active but poorly understood base. This misdirection temporarily assuages Tegan's assumptions.

Before: Heard as an electronic intercom tone and assumed to signal safety.

After: Clarified by the Doctor as part of the base's operational deception.

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