From the tone of the press release, it sounds like the leadership at UPS has put all their eggs in one basket, expecting the NMB will release them.

Word is that the NMB recently parked them since they were not making progress. That said, I wouldn't bet the ranch that the NMB will reverse themselves by issuing a proffer.

Here's hoping for the best for the mechanics. I sure as heck hope their leadership has a "plan B" ready if the NMB says "no."