Military warning (2 wds.) (3,5)

I believe the answer is:

red alert

(Other definitions for red alert that I've seen before include "State of readiness for imminent threat" , "Serious warning" , "Danger sign" , "State of readiness for imminent crisis" , "Scarlet warning of imminent danger?" .)

I've seen this clue in The Star Tribune.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.