In the past, one would never see anything like a helicopter in Beijing, certainly not in the city. With the Olympics that all changed.
See here some shots all taken from my office balcony in Julong Garden.

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You can see 3 different types, one is army/police, one is CCTV and one is special for the Olympics (BOB logo). If you look well you’ll see the special cameras hanging on the side. See also the pic I took of one of the many scale models in my office. You will notice the similarity!