Residents participate in a vigil in support of Venezuelan President Hugo Chavez in front of Caracas' Military Hospital, in Caracas, capital of Venezuela, on Mar. 2, 2013. Venezuela's ailing President Hugo Chavez is undergoing chemotherapy in the capital's military hospital, Vice President Nicolas Maduro said Friday, calling for respect for Chavez and his family. (Xinhua/Mauricio Valenzuela)