on red alert

At the ready to deal with or prepare for some imminent danger, threat, trouble, or difficulty. We're safe here—the soldiers patrolling the border are on red alert. As soon as I heard my window break in the middle of the night, I was on red alert to fight off an intruder.

on ˌred aˈlert

prepared for an emergency or for something dangerous to happen: Following the bomb blast, local hospitals have been put on red alert.

See also: alert, on, red

References in periodicals archive ?

MANILA -- Camp Aguinaldo's security group went on red alert for the Edsa People Power celebration.

Camp Aguinaldo security group on red alert ahead of Edsa rites

Information on Red Alert Group's services, training, products and management can be found at www.

SIMEX Technologies and Red Alert Group Join Forces

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