Over the past three years, nine communities in the United States have reached a rigorous standard known as functional zero" for either veteran or chronic homelessness - a standard that indicates that homelessness is rare and much briefer than in the past for their populations - and 37 others have accomplished measurable reductions toward that goal. What's illuminating is how they're doing it: by making whole systems smarter. They are linking in a national network ... to improve their performance. Rockford, Ill., was the first community in the United States to reach the functional zero level for veterans. "We get everybody in our community who works on the issue ... and we bring them into a room," [said Jennifer Jaeger, the city's community services director]. "So if we're working on veterans, we'll have the V.A., the local veteran agencies, mental health agencies and substance abuse agencies. We'll sit down with the list and say: 'O.K., John Smith is No. 1. Who's working with him? How do we get him housed as fast as we can?' And we go literally name by name. It makes a huge difference because they stop being 'the homeless' and become people we all know. And we become very vested in making sure John Smith is housed and safe and has the services he needs." Successes get turned into mini case studies and are logged in Built for Zero's menu of strategies. So if a community partner wants to know how to do effective street outreach or improve housing retention ... there's an inventory of proven ideas to draw from.