Security for the country 's two international passenger airports comes under the purview of the Airport Police Division of the Singapore Police Force , although resources are concentrated at Singapore Changi Airport where scheduled passenger traffic dominate . Seletar Airport , which specializes in handling non-scheduled and training flights , is seen as posing less of a security issue . Since the September 11 attacks , and the naming of Changi Airport as a terrorism target by the Jemaah Islamiyah , the airport 's security has been stepped up
September 11 attacks
September 11 attacks
Airport security