[costigan]

It hasn't been limited to probationary employees. Here's one example: https://www.science.org/content/article/nih-ban-renewing-sen... Agencies have also been directed to make plans for "significant reductions". For example, EPA plans to cut 65%. Fish and Wildlife and the Bureau of Indian Affairs are preparing for up to 40%. These latter cuts haven't happened yet, but they're very likely.

[andreygrehov]

That's correct. It hasn't been limited to probationary employees only, but many are. Those who are not either aren't needed or will be rehired if operations cannot continue without them.