Probe
SEA was an important base before your day and large relative to what it flew.
They had 727, DC8, DC10, DC6, DC7,...
You are basically modern history and I believe know the ALPA local rep , first name starts with J, you are talking about. He always had the pilot's best at heart but maybe was a bit full of his capabilities.
Trust the problem in SEA was management and their lack of decision ability. They even considered pulling out of DEN during BK.