I heard the 737 fuselages are built in Wichita and shipped to WA for completion. Maybe I am misinformed. I saw some going north in Wyoming in 2012. UK railfan.
I've always wondered if Boeing has had any incidents where crackpots take potshots at the fuselages with a rifle or pistol. It's a long trip from Wichita to Renton with a lot of stops in dark places.
There is something sick about a country that has people that fire guns at those beautiful pieces of engineering, that requires reworking when they arrive.