We were leaving work and my wife noticed a kitty cat darting under something in the parking garage.
We eventually gathered a large group of people and coaxed/pulled the kitty cat out of the niche she was hiding in. We thought at first she might be a stray (no collar) but she didn't hiss, bite, or scratch, and she seemed well-groomed, so I'm pretty sure she was somebody's kitty cat.
My wife wrapped her up in a blanket and took her up to ground level and left her somewhere out-of-the-way. All things considered, I think that was probably the best thing we could have done; it was late in the day and I don't think animal control would have come out to pick her up if we'd tried to call them, and I doubt there were any shelters still open that late. And we live 13 miles away and own a dog
and I'm allergic to cats. I'm hoping we left her in a spot where she was comfortable and close to home and, hopefully, able to find her way back to her people once she calmed down.
(She couldn't have gotten back into the garage, anyway; the gates come down after 5:30 PM and it was around 6 by the time we got out of there.)