Twice in USS Indianapolis: Men of Courage.

The ship goes to Red Alert, but it's so loud no-one can hear the captain's orders.

Sev Trek: Pus in Boots (an Australian CGI spoof of Star Trek: The Next Generation).

When Jack causes chaos by giving out dangerous toys on Christmas Eve, the militaries of the world mobilize to stop him, complete with air raid siren.

The Mayor of Halloween Town orders the alarms sounded when Jack Skellington disappears (a siren in the form of a stone cat with its tail being turned by a mummy).

Happens twice in the film The Nightmare Before Christmas.

Earlier, Red Alert lighting can be seen inside of Riley's father's head as his emotions prepare to Put the foot Down.

Inside his head, his emotions are running around like headless chickens, while a Red Alert klaxon blares, 'Girl! Girl! Girl!'

Toward the end of Inside Out, Riley meets a boy her age, who goes nearly catatonic on her.

In Aladdin and the King of Thieves, Genie calls for an over-the-top Code Red when the titular King of Thieves shows up at the palace, but calls it off when Aladdin introduces him as his father.

Then with the vehicles' rotating lights flashing and sirens sounding, the production's theme music plays the heroes go full speed to the emergency. Meanwhile, the rescue heroes move quickly, often going down sliding poles to the garage, calmly to suit up and board their vehicles with utter professionalism. Suddenly the base explodes with activity as the klaxons sound and the dispatcher comes over the PA system with the essential information. where the heroes are at their base and the dispatch call sounds. In a Rescue show, or any film with an emergency service like the fire department, there is a variant of the alert that can be called the Emergency Squad Scramble. Often accompanied with This Is Not a Drill. See Red Alert right away, the Wiki's gone on Self-Demonstrating Article mode. On modern ships, lights flash, klaxons sound and all watertight doors are closed, thus if the ship is holed the leak is contained.

Off-duty sailors report to their stations, cannon are loaded, and the decks are cleared of non-essential items. The alert is sounded by a drum or over an intercom. Whatever the wording used, most of the procedures are the same. The phrase 'Red Alert' comes from the naval tradition of 'General Quarters' (also known as 'Battle Stations', or 'Action Stations' if you're British), an announcement made when a ship prepares for battle.

Red alert sound effect