A Mig-26 helicopter carries materials while soldiers hold the tent to prevent it from being blown away by the strong air current due to the operation of the helicopter at the Tangjiashan quake-formed lake in southwest China's Sichuan Province, May 9, 2008. The drainage plus natural leakage of the lake was about 48 cubic meters per second, a hydro expert said on Monday morning. The Chengdu Military Command of the People's Liberation Army sent an additional 120-strong team to blast boulders in the channel to accelerate drainage.(Xinhua photo)