What does it indicate when a symbol turns yellow on the Sentinel?

When a symbol turns yellow on the Sentinel, it indicates a track warning. In this context, a yellow symbol serves as a visual alert to operators that an incoming threat—such as an aerial target—may require heightened attention or additional assessment. This warning allows operators to respond accordingly, whether by increasing monitoring of the track or preparing for possible defensive actions.

Understanding track warnings is crucial in air defense operations, as they can signify changes that could impact the safety and effectiveness of airspace defense. Identifying a track warning quickly ensures that the air defense system can react to emerging threats in a timely manner, thereby enhancing overall operational readiness and mission success.