I once (20+ years ago) had the FD help me get back in my locked house. IIRC, one of them went on the roof and climbed in my parents bedroom window, which was open.

I actually just locked myself out today. Dropped my car at Sears and caught a ride home with friend. Got up to my door and went Oops. Landlord, who lives just up the slope, was home so it wasn't a big deal.