Chinese Navy special force members stand on the deck of a missile frigate "Mianyang" , waiting to depart for the Gulf of Aden and the sea off Somalia on escort missions, at a port in Qingdao City, east China's Shandong Province, Feb. 16, 2013, The flotilla, as the 14th batch of its kind to engage in escort missions, consists of a missile destroyer and a frigate as well as a supply ship which are all from the North Sea Fleet of the People's Liberation Army (PLA) Navy. [Xinhua]