HONG KONG, CHINA - NOVEMBER 18: (CHINA OUT) A helicopter sprays water to put out a fire in a demonstration during the Government Flying Service (GFS) Open Day on November 18, 2007 in Hong Kong, China. Flying demonstrations including the Jetstream J-41 aircraft and Eurocopter EC155 B1 Helicopter, motorcycle performance, police dog performance, exhibitions and other activities were held at the event for people to learn about GFS's work and daily operations.  (Photo by China Photos/Getty Images)