Japanese power plant operator Tepco sent a drone into a damaged reactor at the damaged Fukushima Daiichi nuclear power plant on Wednesday. The drone is part of a fleet of four devices that are supposed to fly one after the other into the primary containment container in the most damaged reactor 1.
TEPCO officials said they want to use the drone data to develop a method to remove the melted fuel from the reactor. In March 2011, an earthquake and tsunami destroyed the power plant's power and cooling systems, leading to meltdowns in three reactors.