Which security measure was revived after 9/11 involving flight crews?

• A. Armed guards at boarding gates
• B. Locking cockpit doors
• C. Armed pilots
• D. Use of metal detectors

Answer: (C)

After 9/11, aviation security focused on giving flight crews tools to respond quickly to in-flight threats. The measure revived was arming pilots, providing trained pilots with the authority to carry firearms in the cockpit under strict rules. This approach aims to deter or counter a hijacking before authorities can intervene, leveraging the crew’s immediate proximity to the threat. Other options—arming guards at gates, locking cockpit doors, or metal detectors—play important roles in overall security but do not involve the flight crew taking direct, immediate action in the cockpit the same way armed pilots do.