they were drilled, they did have hallways and hardened rooms for shelters.
The storm was too powerful.
Sad. I still believe that an underground facility MAY have helped. We used to go down to the bomb shelters in our school. Of course that was the Cold War, “Soviets are going to bomb us” era.
Maybe a “hardened: room or hallway just isn’t enough. For generations folks went underground and maybe that is what we need once again? Prayers go out...