Canada's '9/11' and what program did it initiate internationally?

• A. Biometric boarding gates
• B. Enhanced passenger screening via PNR data sharing
• C. ICAO mandates Positive Bag Match
• D. TSA PreCheck expansion

Answer: (C)

After 9/11, international aviation security moved toward harmonized standards through ICAO. One major measure Canada helped advance is Positive Bag Match, a process that requires each checked bag to be linked to the passenger who checked it. This ensures the bag is loaded onto the same flight as its traveler and reduces the risk of misrouted or lost luggage, strengthening accountability across airports and airlines worldwide. Because this is an ICAO-standard, internationally adopted approach, it fits the description of an internationally initiated program following the 9/11 attacks. The other options are either newer or national programs and do not reflect an ICAO-mandated international standard.