According to Kyodo News Agency of Japan, a small unmanned plane owned by Air Photo Service, an aviation photo taking company in Niigata's Myoko City took about 150 photos of the situation and water injecting operation of the No.1 Fukushima nuclear power plant on the 20th and 24th day. The photos clearly recorded the heavily damaged reactor buildings because of hydrogen explosions and the messy plant area after being attacked by earthquake and tsunami.