"Homeland Security Presidential Directive 7 (HSPD-7) identified 17 critical infrastructure and key resources (CI/KR) sectors and designated Federal Government Sector-Specific Agencies (SSAs) for each of the sectors. Each sector is responsible for developing and submitting Sector-Specific Plans and sector-level performance feedback to the Department of Homeland Security (DHS) to enable national cross-sector CI/KR protection program gap assessments. SSAs are responsible for collaborating with private sector security partners and encouraging the development of appropriate information-sharing and analysis mechanisms within the sector. Homeland Security Presidential Directive 9 (HSPD-9) establishes a national policy to defend the food and agriculture system against terrorist attacks, major disasters, and other emergencies."
Center for Food Safety and Applied Nutrition: http://www.cfsan.fda.gov/