More than 6,500 emergency rescue personnel from Ganzi, Chengdu, Deyang, Leshan, Ya'an, Meishan and Ziyang were dispatched to the epicenter.[38][2][39] In addition, four rescue helicopters, two drones and 31 rescue equipment were deployed.[38][40] Over 3,600 people and 70 search and rescue dogs from Chongqing, Gansu, Guizhou, Yunnan, Qinghai and nearby regions were put on standby for possible interregional efforts.