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Alert signal

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Alert signal excelsior

Signal status display on the USS Excelsior; from top to bottom: "red alert", "yellow alert", "normal", "stand by", "auxiliary"

Aboard Starfleet vessels and outposts, a series of color-coded, and also generally named, alert signals were issued, usually by the ship's computer or internal communications systems.

Colored alerts Edit

General alerts Edit

Galaxy alert status indicators

A Galaxy-class alert indicator in normal, yellow alert, and red alert modes.

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