What is CRAM DNES in air defense terminology?

• A. Bubble whose size is determined by track quality, placed around friendly aircraft preventing the LPWS from engaging to prevent fratricide
• B. A radar mode used to detect stealth aircraft
• C. A communications protocol for coordination
• D. A surface-to-air missile type

Answer: (A)

CRAM DNES is a protective buffer around a friendly aircraft used to deconflict engagements and prevent fratricide in a layered air-defense environment. The size of this bubble is driven by track quality—the more confident the track, the smaller the bubble, allowing engagement of true threats outside; when track data is uncertain, the bubble grows to keep shooters from risking a friendly aircraft. It’s a safeguard mechanism, not a radar mode, a communications protocol, or a missile type.