On Christmas Eve (one of the busiest shopping days of the year) I found myself in a large retailer in the middle of the afternoon when the power went out. For about 60 seconds it was completely black in the building before the emergency lighting kicked on.
When the lights went black I pulled out my Streamlight ProTac HL, double tapped the button to the 600 lumen mode and I lit up the entire main aisle all the way across the building. Nobody else pulled out a flashlight, and only a couple people that I could see pulled out cell phones to try and navigate out of the building.
You don’t need to rock a 600 lumen monster like I do, but a simple pen light like a 5.11 TMT PLx, or Streamlight Stylus Pro will give you enough light to navigate in the darkness, should you find yourself in it.
I later found out that at the same time the power went out where I was, Crabtree Valley Mall also experienced a major outage. I don’t like being in malls to begin with, and I couldn’t imagine being stuck in one in the dark, without a flashlight, surrounded by hoards of helpless people.