I've hauled inside my house a weeks worth of water, plastic, duct tape, staple gun, tarps, heavy blankets, dog food, all ready to go. I will seal off and create a containment area inside to include kitchen (food), bath, 1 bedroom. Will seal interior doorways and open hallways inside the house with the plastic, tarps, blankets. Will flip some tables so dogs can't break thru plastic sheeting at open door/hallways. Dogs will be inside for a week straight, making a mess in my house but I love em and they are good protection. Seal all windows and exterior doors with plastic. Stay inside for 1 week.

Upon any news of an explosion, I will begin to start putting up plastic/tarps. Also if possible filling bath tubs and sink early on, then not using tab water after that. If time, dump chicken quail food/fill water to flock or free them. Also filled up oil lamps.

I will hope for the best yet prepare for the worst.
Not trying to bring fear just heeding the threat, better to be prepared, I believe.

I am not in a city but a semi rural area in CO.