Plant closing and notice period questions - 3 months and counting

My employer announced that the site will close and gave us written notice. I have read a lot of threads here and could not find my exact situation. Some colleagues are already leaving. Should I stay for the bonus?

The workforce board ran a rapid-response session for us with résumé help and information on benefits. Ask if yours will.

I stayed for the retention bonus and looked for work on the side. It cushioned the gap.