Defcon

It’s either yellow or green.

good example of DEFCON 1 would be the climax of the cold war or the cuban missile crisis which was the biggest arms buildup in history

DEFCON (Military Defense Condition) - for the Military - we are 5:

The DEFense readiness CONdition (DEFCON) is a measure of the activation and readiness level of the United States Armed Forces. It describes progressive postures for use between the Joint Chiefs of Staff and the commanders of unified commands. DEFCONs are matched to the situations of military severity. Standard peacetime protocol is DEFCON 5, descending in increasingly severe situations. DEFCON 1 represents expectation of actual imminent attack, and is not known to have ever been declared.

Homeland Security Advisory System - we are yellow

Red - Severe Orange - High Yellow - Elevated Blue - Guarded Green - Low