be on red alert

To be very attentive and ready to take action. This term is often applied to soldiers. 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.

Common Names:

Name	Pronounced	Usage
HİKmet	-	Turkish
Berthe	-	French
Vinicius	-	Ancient Roman
Udo (2)	-	Western African, Igbo
Vasilica	-	Romanian
Dismas	-	Judeo-Christian Legend