What are USF standardized attack warning signals?

standardized warning signals for CBRNE medium and high threat areas

Green, Yellow, Red, Black!

standardized warning signals for CBRNE medium and high threat areas

standardized warning signals for CBRNE medium anf high threat areas

~alarm green - attack is not probable ~alarm yellow - attack is probable in less than 30 mins ~alarm red (wavering tone) - attack by air or missile ~alarm red (bugle) - attack by ground ~alarm...