A police officer wears a protective suit during an exercise held at Hong Kong International Airport March 17, 2006. The scenario simulates a highly contagious disease, such as SARS or avian influenza, infecting a passenger on board a flight arriving in Hong Kong. [Reuters]

Members of Hong Kong's Health Department participate in a simulation exercise at the Hong Kong International Airport March 17, 2006. The scenario simulates a highly contagious disease, such as SARS or avian influenza, infecting a passenger on board a flight arriving in Hong Kong. [Reuters]