Federal government agencies active in meteorological services and supporting research describe existing and planned programs, projects and coordination mechanisms which involve multiple government agencies, and aim to increase overall effectiveness within the Federal Weather Enterprise. These mechanisms include bi-lateral agreements between agencies for shared use of observing systems, numerical modeling resources and product dissemination systems. Also of interest, standing committees and panels which provide opportunities for synergistic engagement among multiple agencies, particularly in areas such as aviation weather and disaster preparedness and mitigation. The session will begin with a description of the recently established Inter-agency Committee for Advancing Weather Services mandated in the Weather Act of 2017 and the changes it brought to the Federal Weather Enterprise Coordinating Structure.