Erikson Institute's Fussy Baby Network® (FBN) is a national model prevention program known for its approach to family engagement called the FAN (Gilkerson & Gray, 2014; Gilkerson et al., 2012). The FAN is both a conceptual framework and a practical tool to facilitate attunement in helping relationships and promote reflective practice. This article briefly illustrates how the FAN provides a guiding framework in each of the FBN's three kinds of dissemination sites: (1) program sites which start a new FBN home visiting program typically in an agency which already provides a continuum of infant-family services (Fussy Baby Network New Orleans and Gulf Coast Region (FBNNOGC) located at Tulane University in the Department of Public Health and Tropical Medicine); (2) infusion sites which incorporate the FAN approach into an existing program (FBN Maryland in collaboration with University of Maryland Center for Infant Studies (CIS)); and (3) systems sites which incorporate the FAN approach into larger systems of care, such as evidence-based home visiting programs (Family Focus Englewood--a Healthy Families Illinois home visiting program serving families on Chicago's southwest side). [This article originates from an address given at the Irving Harris Foundation Symposium, March 20, 2014.]