Special Duties Unit
The Special Duties Unit (SDU; Chinese: 特別任務連), nicknamed the "Flying Tigers" (Chinese: 飛虎隊), is a police tactical unit of the Hong Kong Police Force tasked with countering terrorist attacks, hostage rescue, underwater search and recovery, and tackling serious crime involving firearms. The Hong Kong Police Force (HKPF) comprises two other tactical units, the Airport Security Unit and the Counter Terrorism Response Unit; the SDU is the primary tactical unit of the HKPF. In 2024, the SDU was placed under the command of the Counter Terrorism and Major Incidents Bureau which is part of 'A' Department Operations Wing.