Hey ... I'm an anyone.

I understand that these types of units are intended to be buried so that only the hatch at the top is exposed. And it only to vertical forces. Put something mostly underground and you gain quite a bit on surviving a tornado. Laying in a ditch or climbing into a culvert are classic ways to survive a tornado. this looks to be an up-scale and modernized version of the old farmers standby, the root cellar.

Good protection because it is pretty hard to break dirt.