The Building a Competent Crisis Care System at Intercepts 0-1 Community of Practice (CoP) will explore policies and practices to build and enhance a competent crisis care system. Through participation in this CoP, selected sites will work to improve strategies related to components of a crisis care system including 911 and crisis line integration, mobile crisis response, community alternatives to emergency department and inpatient dispositions, and partnerships with law enforcement. Communities will be expected to work with current and new stakeholders including local hospital leadership, behavioral health providers providing crisis response services, treatment providers, housing agency director(s)/local public housing authority directors, peer-based recovery support services, 911 call takers/mental crisis call centers, and law enforcement.