What do 4 green lights indicate on the SCBA night fighter system?

The presence of four green lights on the SCBA (Self-Contained Breathing Apparatus) night fighter system signifies that the air supply is at 100%. This indicator system is designed to provide quick visual confirmation of air supply status, allowing users to assess their readiness for operations without needing to check other gauges or equipment. When all four lights are illuminated in green, it clearly communicates that the user has a full air supply, which is critical for maintaining safety during firefighting or search and rescue operations.

Understanding these indicators is important for the efficient and safe operation of SCBA equipment, ensuring that personnel can rely on their systems for sustained operations in hazardous environments.