Earlier robots had failed, getting caught on debris or suffering circuit malfunctions from excess radiation.
Why didn't they just fly a drone in there? It's a lot faster and cheaper than a robot. It could probably get in and take a lot of video before succumbing to the radiation.
I know the Japanese have "heard of them".
22 posted on 11/19/2017 3:44:12 PM PST by ROCKLOBSTER
(RATs, RINOs...same thing)