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|Appearances||Tom Clancy's Rainbow Six Siege|
Operation Blood Orchid
The Special Duties Unit (Abbreviation: SDU; Chinese: 特別任務連, nicknamed Flying Tigers 飛虎隊) is Hong Kong's main elite paramilitary special operations unit. The SDU is a subdivision of the Police Tactical Unit (PTU) of the Hong Kong Police Force.
The SDU is an available organization in the Tom Clancy's Rainbow Six Siege: Operation Blood Orchid expansion.