The People's Liberation Army (PLA) Chengdu Military Area Command has dispatched helicopters to help with relief work in Wenchuan County which has been affected by flooding. An aviation unit dispatched three helicopters with 19 relief workers and 7.5 tonnes of materials in 12 flights to Caopo Township of Wenchuan County, which suffered downpours and mud-rock flows, according to the area command. [Photo/Xinhua]