Final answer:
Weather technicians task-certify ATC personnel to evaluate prevailing visibility values from weather instruments and sensors.
Step-by-step explanation:
Weather technicians will task-certify ATC personnel to evaluate prevailing visibility values from weather instruments and sensors.
These weather instruments and sensors include devices like meteorological satellites, weather balloons, radar systems, and visibility sensors.
By using these tools, ATC personnel can accurately assess prevailing visibility conditions and provide important information for flight operations and safety.