HSIN could learn from the FBI's Infragard program. membership at Infragard has grown to over 30,000 individually vetted members, providing secure communications to and from Washington as well as between members. DHS HSIN should partner with Infragard to leverage this pool of infrastructure members.
Another world-class public private partnership is OSAC (the Overseas Security Advisory Council, administered by Department of State). After 25 years of partnership with the private sector, OSAC is the pinnacle of USGOV/Private sector partnership.
DHS-HSIN should provide secure linkage to these outstanding models of public private partnership, and leverage the existing pool of private sector resources to further increase public private partnership.