The countries of Central America share many common challenges, and the roots of crime and violence in their societies are quite similar. To help USAID and other agencies working to change this reality under the Central American Regional Security Initiative (CARSI), the Technical Support Services (TSS) project provided support and technical expertise to identify best practices and foster exchange and learning on crime and violence prevention in the region. The results of this work were critical to helping CARSI partners and implementers better understand and collaboratively address the serious challenges facing Central America.