If you are paying attention, at one point in video #3 @ 7:20, an area in the pool is boiling. Besides in some shots steam rising from the reactor location in the background and debris strewn everywhere.
The #4 reactor was not in use at the time of the great quake and had its lid off for a shroud replacement and supposedly all reactor core assemblies are in with the other spent fuels rods. About 1331 fuel assemblies in the #4 SFP. The pool was only designed for half that amount of weight.
http://enenews.com/missing-fuel-assembly-racks-spent-fuel-pool-4-video
There is no video in the link I asked about. It's a .PDF file. Or are you one of those jerks who posts random comments to anyone unlucky enough to ask you a question??
If there is a point you're trying to make, say so, specifically. I'm not going to indulge in consulting either a Ouija board or Magic 8-ball trying to figure it out.