The previous technician that had been sent out from Safelite was concerned that I might have too much rust to replace the windshield and that I might need to visit a body shop to sand down any excessive rust. This other technician had informed me that I wouldn't be able to drive my car if the windshield had excessive rust.
However, Adrian assured me that he'd carefully check to see if the replacement was do-able. My car is 23 years old, and it was in California for the first 18 years, so it might very well have had rust, but it turned out that it didn't have rust and my windshield was able to be replaced. Adrian was friendly, kind and positive. I really appreciated his repair job!