Jack Conley plays a firefighter simultaneously in two shows, 9-1-1: Lone Star and Chicago Fire.
This episode seems to be based on the story from February of 2021 when Houston, TX business owner Jim "Mattress Mack" McIngvale offered shelter in his store, Gallery Furniture, to local residents suffering from cold exposure and power outages.
Gina Torres (Jasmine), Harry Groener (Mayor Richard Wilkins) , & Julie Benz (Darla) are all from the Buffy the Vampire Slayer & Angel universe.