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. [Photo/Xinhua]