PARIS (Reuters) - The thwarting of an al Qaeda plot involving a non-metallic bomb shows that safety operations begin with strong intelligence and full-body scanners at airports are not the only tool to fight increasingly sophisticated threats, the U.S. secretary of Homeland Security said on Friday.
Janet Napolitano said in an interview with Reuters that a "multi-layered" strategy against militant groups included cooperation between spy agencies, good intelligence as well as looking at travel patterns and the behaviour of passengers at airports.