Layoff notice, what does the 60 days mean? - 2 months and counting

Our team was told about a closure date that is 5 weeks away. I worked as a security officer before this. I do not know if I should start looking now or wait for severance news. Has anyone been through this?

Start your search early. I wish I had begun the day of the notice.

Write down key dates and keep copies of the notice. Mine helped when a question came up later.