Sounds like the company shutting down to attempt contract tracing for an endemic respiratory virus hurt themselves with a stupid policy. A policy of blanket vaccine mandates so they can supposedly avoid their previous self defeating shitty policy makes no sense.I think the bold part because just about every country in the world supported by their best apolitical virologists, epidemiologists, and public health professionals have come to the same answer that the vaccines are safe and necessary to return to normal life. If that's not scientific and management consensus I'm not sure what is.
There are also many other companies that are mandating the vax. You can Google them if you like. They're certainly not all the companies ever but there's more than zero. That and the new OSHA rules will essentially require it just as OSHA rules have required lots of other workplace safety things. But that's how govt works for the workers to provide a framework that companies have to comply with otherwise we'd still have child labor and be working 12hrs a day for 6 days a week and buying all of our mining equipment from the company store.
As to defense contractors if they want to continue to get the king's coin they need to follow the king's rules. I don't think they need to mandate the vax as they can test but I doubt many companies are going to want to take on the cost of testing. The big defense contractor I work with every day has a stricter mandate policy in place than the govt. I saw whole companies come to a halt for 3+ weeks this past winter due to covid racing through their building. Shutdowns like that had direct impacts on the fleet and those companies' bottom lines.
When I say federal workforce I mean mil, gov, css, and oems that make it all happen.