A mixed flight group of Strizhi and Russkie Vityazi (Russian knights) perform during the MAKS-2013 international aviation and space show in the city of Zhukovsky near Moscow, Russia, Aug. 27, 2013. The MAKS-2013 kicked off in Zhukovsky with flight programs to be held at the airfield of the country's major national testing facility - Gromov Flight Research Institute. The six-day event showcases the products of more than 1,000 aerospace enterprises from 44 countries and regions and includes aerial demonstrations for industry experts and the public. (Xinhua/Shen Jinke)