All Federal mail programs must identify, prioritize, and coordinate the protection of all mail processing facilities in order to prevent, deter, and mitigate the effects of deliberate efforts to destroy, incapacitate, or exploit the mail center or the national mail infrastructure. Homeland Security Presidential Directive HSPD-7 requires all agencies to protect key resources from terrorist attacks, and this is spelled out in the Postal and Shipping Sector Plan, which is part of the National Infrastructure Protection Plan (NIPP) prescribed by HSPD-7. All Federal mail centers are key resources under that plan. Details on the Postal and Shipping Sector Plan are not publicly available. Federal employees needing access to the plan should contact the Department of Homeland Security (DHS) at NIPP@dhs.gov.