In 1997, I was in the New Orleans building. A month before the strike, package car drivers were openly laughing at me because I was saying there would be a strike. Management "loud capped" and laughed because I wanted to sell my UPS stock to have money for the strike. "UPS has NEVER had a strike in it's history. This will be resolved." First few days into strike everyone was still laughing "because the strike wouldn't last long." About Wednesday of the second week, the weak broke and started to cross the picket line.
Now, all these years later, every single guy that laughed at me, now has a revised memory where they knew there was going to be a strike too. I could tell from that look in their eyes

in 97, pure fear, they were unprepared.
If a strike hits, react immediately and start looking for side job when you aren't scheduled to be on the picket line. I worked for fired UPS driver that had started his own courier service.
For me, a guy that was prepared, the worst part was not the strike but the loss in feeder jobs after the strike. I got sent back to packages. I wasn't prepared for that.