A list member of firstname.lastname@example.org has sent the following message to the group:
A pair of robots entered the Unit 3 reactor building at Fukushima Daiichi. The robots are equipped with cameras, radiation and temperature instruments. iRobot, the manufacturer, is based in Bedford, Massachusetts.
Also, remote controlled helicopters have been taking video from above. See YouTube clips below. The second clip shows pictures of the robots inside the reactor building.