Aviation Security The __________ to enhancing aviation security since 2001, and air travel has become much safer as a result. Transport __________ is working diligently to make further improvements for a secure __________ aviation system — one that is protected against unlawful interference, _________ attacks or use as a means to attack our allies. The department's aviation security programs include the following: * Aviation Security Regulatory Framework Program * Aviation Security Oversight Program * Airport Policing Assistance Program * Air Cargo Security Initiative * Aviation Security Backgrounders * __________ Air Transport Security Authority (CATSA) Review * Passenger's Luggage * Prohibited Items List * Security measures for liquids, gels and aerosols * Notice To Travellers