Nobody likes this situation, but any union who does not vote for the agreement is voting for the company to not survive.
The airline will lose it access to capital, the loan guarantee, and the creditors committee support. Thus, the judge will have virtually no option but to fragment and liquidate the company. Therefore, 36,000 jobs will be lost and 11,000 furloughed employees will have no company to return to.
Again, if you want the company to survive, you must vote yes. It's that simple.
Chip