Final answer:
Security personnel, such as those from the TSA, screen passengers, baggage, and employees at airports using metal detectors, X-ray scanners, and body scanners.
Step-by-step explanation:
The individuals responsible for screening passengers, baggage, and employees in an airport setting are typically security personnel. These security personnel work for the Transportation Security Administration (TSA) in the United States and similar agencies in other countries. They use various screening methods such as metal detectors, X-ray scanners, and body scanners to ensure the safety and security of air travel.