Johnson County Emergency Management & Homeland Security is based in Olathe, Kansas. The Johnson County Emergency Management and Homeland Security office has made a concerted effort to increase the presence of emergency management and community preparedness. We focus on preparing for, responding to, recovering from and mitigating the impact of crises, major emergencies and disasters within the community. Our information is available for everyone, not just county residents. We encourage people everywhere to take action and prepare for disasters.