The videos were taken by the Packbot inside the nuclear reactor building of Fukushima Daiichi Nuclear Power Station - 1st Floor, Nuclear Reactor Building Unit 2(Video on April 18, 2011) The videos were taken by the Packbot inside the nuclear reactor building of Fukushima Daiichi Nuclear Power Station - 1st Floor, Nuclear Reactor Building Unit 2(Video on April 18, 2011)