The National Plant Diagnostic Network (NPDN) was formed in June of 2002 in response to concerns related to agricultural bioterrorism. In particular, the USDA identified 10 exotic plant pathogen select agents that could have a significant impact on major agricultural commodities if introduced. Much of the initial focus of the NPDN has focused on preparing for the potential introduction of these select agent plant pathogens, but the overall mission of the NPDN is to promote the early detection of either intentional or accidental exotic pest introductions. The NPDN is divided into five geographic regions: Great Plains Diagnostic Network (GPDN), Northcentral Plant Diagnostic Network (NCPDN), Northeastern Diagnostic Network (NEPDN), Southern Plant Diagnostic Network (SPDN), and Western Plant Diagnostic Network (WPDN). Each region has a land grant university that serves as a regional center for the coordination. More information on the NPDN can be found at http://www.npdn.org/DesktopDefault.aspx . Information on the current structure and future plans for NPDN governance will be described.