A dismissal with prejudice means the case is concluded and can never be refiled. A dismissal without prejudice allows the case to be refiled, assuming the statute of limitations has not expired.
What is the applicable Statute of Limitations, GREPAR?
Wrong... the statute of limitations applies to the FIRST FILING... and incidentally does not have application to a FOIA request.
Lahr must request the AMENDED information from the agency FIRST... he then may file a suit if the agency does not respond with that information or provides incomplete information.
You are picking nits while Lahr is following the proper procedure.