Form DS-5525

Has anyone ever notarized one of these?

No. Because it contains no notarial language – there is nothing to notarize.
Here is a link to instructions for the form DS-5525: Statement of Exigent/Special family Circumstances

Thank you. I tried explaining to the client that this did not have a space for notarizing.

I made a copy of his drivers license and added a jurat to the copy. He needed that too.