[American Constitutionalist]

Drive heavy I beams into the ground and pour concrete around it and anchor the shipping containers to it.
Yes, they should be below ground.
These would give more protection than a stick built home.
The ideal situation is monolithic poured concrete walls but everyone can not afford that.
Stick build structures are useless in tornadoes.
They just showed a woman impaled by a 2X4 on the live stream.

[Pining_4_TX]

http://www.newdaytornadoshelters.com/

Thinking about getting one of these.