What does White indicate in Air Defense Warning Levels?

• A. White - not probable
• B. Yellow - attack probable
• C. Red - attack imminent or in progress
• D. Blue - normal conditions

Answer: (A)

Air Defense Warning Levels use color cues to quickly communicate threat likelihood and the level of readiness required. White means that an attack is not probable, so there’s no need for heightened procedures or scramble actions—the situation calls for normal monitoring and standard operations. This is why White is the best answer: it directly states that there’s no credible threat at that moment. In contrast, Yellow signals that an attack is probable, Red means an attack is imminent or already in progress, and Blue is used for normal conditions in other parts of the system, indicating different baseline states depending on the protocol. Understanding White as not probable helps crews respond appropriately with the right level of vigilance without overreacting.