Makeshift command chair

A container useable for an emergency evac

An evacuation alert, or evacuation alarm, was used to signal a mandatory evacuation of a certain deck, ship, planet, or starbase. It was normally used during a catastrophic event such as a hull breach or a loss of antimatter containment. This was a higher alert state than battle stations or red alert. (DS9: "Visionary", "Valiant"; VOY: "Dreadnought", "Deadlock", "Year of Hell"; Star Trek Into Darkness; Star Trek Beyond)

Signage aboard the Earth Cargo Service freighter ECS Fortunate instructs how to react in an emergency situation. In the event of fire, the fire alarm should be activated. All non-essential persons should be evacuated from the area. (ENT: "Fortunate Son")

Aboard Enterprise NX-01, containers were available for emergency evac situations. (ENT: "The Catwalk")

In 2369, Lieutenant Commanders Data, Geordi La Forge, and Deanna Troi transported into the engine room of a Romulan ship where they found the ship's crew under evacuation alert. (TNG: "Timescape")

In 2371, Chief Miles O'Brien experienced a series of timeshifts into the future, one of which showed station Deep Space 9 put under evacuation alert prior to its destruction. (DS9: "Visionary")

During the failed Red Squad attack on a prototype Jem'Hadar battleship, Nog triggered an evacuation alert from the USS Valiant's conn. (DS9: "Valiant")

After the Breen energy dissipator crippled the USS Defiant, Captain Sisko ordered an evacuation of the ship, triggering an evacuation alert. (DS9: "The Changing Face of Evil")

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