San Diego, California. In addition to action at the federal level, communities also have a critical role in improving clinical care and reducing cardiovascular disease risk factors in the community. For example, the Department of Health and Human Services of the County of San Diego developed a county-wide prevention initiative, including an effort to reduce risk factors for cardiovascular disease. The initiative, Live Well, San Diego! is a comprehensive effort with partners from state, local, private, professional, and community-based groups. Live Well, San Diego! is organized on a “3-4-50” concept, referring to the notion that three behaviors (i.e., poor diet, physical inactivity, and tobacco use) lead to four diseases (i.e., cardiovascular disease, type 2 diabetes, cancer, and lung disease), which account for approximately 50% of deaths.8 In conjunction with local medical providers, the county adopted the goal of becoming a “Heart Attack and Stroke Free Zone” to capture public attention, extend the project to all citizens, convey ownership of the program to the public in addition to the medical community, and to capitalize on the strong sense of community pride. One specific feature of the Live Well, San Diego! initiative is the “Be There Campaign,” which focuses multimedia and social media strategies on heart attack and stroke prevention. It aims to motivate patients to reduce their risk factors to be there for loved ones. The campaign is based on risk-reduction tactics that are designed to actively engage persons in improving their own health as a way to be responsible to family and friends. One method for engaging persons and increasing their participation in the campaign is through the use of new technologies, such as wireless heart monitors, pill bottles designed to measure medication adherence, exercise frequency monitors, and smartphones to report vital signs. For the first time, the top 10 health-care systems in San Diego meet monthly, share data, and discuss how treatment goals are met. Through efforts focused on engagement of the entire medical community and the integration of health programs into the initiative, San Diego County intends to create an effective population health program that can be scaled to other communities throughout the United States.