To mark 40 years since it was set up, the Hong Kong Airport Security Unit (ASU) holds an open day on Saturday, September 9, to show local residents how they keep passengers and staff safe. (Photo: China News Service/Tan Daming)
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To mark 40 years since it was set up, the Hong Kong Airport Security Unit (ASU) holds an open day on Saturday, September 9, to show local residents how they keep passengers and staff safe. (Photo: China News Service/Tan Daming)
