Red Alert

Alert state

An alert state, alert level, or state of alert is an indication of the state of readiness of a country's the armed forces for military action to respond to military attack, terrorism, or natural disasters. The phrase frequently used is "on high alert". Examples of scales indicating alert state are the DEFCON levels of the US military, South Korea's "Jindogae" system, and the UK Threat Levels. High alert states are synonymous with "red alert".

Civil defense siren

A civil defense siren is a form of siren used to warn civilians of approaching danger – a form of emergency population warning. Initially designed to warn city dwellers of air raids during World War II, they were later used to warn of nuclear attack and natural disasters, such as tornadoes. The generalized nature of sirens led to many of them being replaced with more specific warnings, such as the broadcast-based Emergency Alert System and the Cell Broadcast-based Wireless Emergency Alerts and EU-Alert mobile technologies.

Red Alert (TV series)

Red Alert is an Israeli television miniseries based on the October 7 attacks. It was created and directed by Lior Chefetz, and produced by Keshet Media Group and Lawrence Bender. The series premiered in Israel on October 5, 2025 on Channel 12. It was released internationally by Paramount+ on October 7, 2025, marking the second anniversary of the attacks. It received generally favourable reviews upon its release and has been championed by David Ellison, CEO of Paramount Skydance.

Red

Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometers. It is a primary color in the RGB color model and a secondary color in the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy.

red alert

Noun

1. A warning that indicates an emergency situation.
2. A state of readiness to deal with such emergency situation.