Probably because they don't know where to take cover. Depending on how much time I have, if I had to take cover, I'd either load up supplies in the car and hea

Probably because they don't know where to take cover. Depending on how much time I have, if I had to take cover, I'd either load up supplies in the car and head to the 3rd underground floor of my office parking garage (but away from the vent stacks in 2 corners of the garage), or if I have less time, I'll jump the fence at the apartment complex next door and hide out in their one floor underground garage. I live in a wood-framed house, so it's going to provide less protection than an underground garage, though still better than running around the streets.