6-rotor helicopter used by Ridus/AirPano team: http://www.airpano.ru/files/bolotnaya_1.jpg
Aerial video: http://rccam.livejournal.com/50143.html (jump to 3m00s to see how the flare rocket fired from the crowd below just barely missed the helicopter)
+ flare rocket shot in the general direction of the helicopter, view from the ground: http://www.youtube.com/watch?v=NIxFjds55U0&t=2m47s
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Also, regarding the second helicopter. The Ria Novosti video linked in the article seems was later removed and another one uploaded instead: http://www.youtube.com/watch?v=dryUQ_192cc (mirror http://ria.ru/tv_society/20111210/512347323.html)
This new video is slightly longer, but the part about Ria Novosti staff operating their (quadrotor) helicopter is no longer there.
