The Jackson, Kentucky, office is one of at least four such facilities across the country that is so short-staffed that it is no longer routinely operating 24/7.

At least 18 dead after severe storms, strong tornado tear through Kentucky

At least 21 people are dead in Kentucky and Missouri on Saturday after a night of severe weather and tornadoes battered cities large and small across the two states, with officials warning the death toll is likely to rise.