Tokyo Electric Power Co. (TEPCO) shows an image captured by an underwater robot inside the Unit 3 reactor at Fukushima nuclear plant during a press conference at the TEPCO headquarters in Tokyo Friday, July 21, 2017. The plant operator said the robot found the objects on its second mission Friday inside the primary containment vessel of the reactor at the plant destroyed in the march 2011 earthquake and tsunami. Experts say the melted fuel has mostly fallen to the chamber’s bottom and submerged by radioactive water. (AP Photo/Eugene Hoshiko)