My greatest threat is a lack of income, so this involves stockpiling food and necessities and building an emergency fund.
Beyond that, I am concerned about fire. I live in an apartment building and it only takes one resident with an unattended lit candle to render others homeless. If there is ever a blackout, I will be ready to bolt out the door because a blackout is the most likely time for a resident to light candles and bring the hibachi into the living room to cook on. Also, buildings are packed closely together here, and a fire that starts a few blocks away can spread rapidly throughout a neighborhood.
My other concern is civil unrest. In this city, if the lights go out, the looting, burning and rioting begin in 15 to 30 minutes. The rioters hit the pharmacies, liquor stores, jewelry stores, etc. first, so there is a window of opportunity to get home. There are other occasions for civil unrest, of course, usually related to politics, and paid for, orchestrated and triggered by the leftist oligarchy, but such riots are staged to occur within view of TV cameras in certain key locations; so if you stay home, or even sleep overnight at the job site, you’ll be ok.