Via Karen in the TAMI project, I gather last month the Department of Justice and the Department of Homeland Security announced the result of an XML collaboration - version 0.1 of the National Information Exchange Model (NIEM) which will be used for law enforcement, emergency management, etc. communities and the parties who exchange information with them.
I hope to check it out. Better yet... I hope somebody else checks it out and writes a GRDDL transformation.