Anyone who's smart worries about walking to the car in the grocery lot after dark.
I worked several years in the heart of Tacoma's Hilltop, which is a pretty rough part of town, and I worked directly with clients then. I'd be fairly confident working in and around the shelters, it's a scene I understand better than many who have never done that kind of work. But I wasn't looking forward to manuevering from restaurant to hotel room alone, in an unfamiliar city that is absolutely jam-packed full of evacuees. And I don't like being unarmed, even in nice hotels full of tourists. I can't imagine getting a wink of sleep.
Pack heat.
It's not worry so much as awareness of my situation. I try very hard to always pay attention to that.
The only place I get nervous is the parking lot at school when I'm up there for an event after dark. It's just sort of creepy somehow.