BIW had a ship repair facility here from roughly the mid-80's to 2000 or so. In that era, Thames St. and the Eastern Prom Trail didn't exist, and Commercial ended at a hard right turn onto India St. I remember, walking to work at Auto Europe from the parking lot we were using (I wish I had known then that the weird concrete slabs in the ground were the old Grand Trunk boarding platforms), hearing the loudspeakers from a docked Navy ship giving leave orders, saying "the area bounded by Union St., Middle St., Pearl St., Commercial St.... I want you to stay out of that area!" The dredged area for the drydock was repurposed for the Megaberth (Pier 2 Berth 2, I believe the proper name is... where the largest cruise ships now tie up).
(Their ship repair business was moved up to Bath around the time they introduced level launches and got rid of the slanted launch ways.)
I notice the Norstar Bank signage on One City Center! That didn't last long... Norstar had purchased Northeast Bank (based in Westbrook), and then they were bought by Fleet which wound up absorbing several other large banks in the 80's. One side effect of that... thanks to the chain of mergers, Bank of America thinks I've been a customer for 47 years, going back to my school banking account with the original Maine Savings Bank! (Shoutout to that photo from the roof of 511

)