The Boeing's promise to make the next airplane in Seattle is also empty as it is only good for four years. It is doubtful Boeing will be making any new models in the next four years.
https://news.bloomberglaw.com/daily-...uture-conflict
Here is a good recap of how it got to this ugly point at Boeing. As we say, companies get the unions they deserve.
https://itunes.apple.com/WebObjects/...=1000670072184