The Science and Technology Directorate (S&T) serves as the research and development arm of the Department of Homeland Security. We help improve security across the nation by developing innovative technology, knowledge products, methods, and solutions to address the critical needs of the Homeland Security Enterprise. A large part of our mission is finding solutions to better enable and protect the men and women charged with securing our communities and critical infrastructure, including first responders, Border Patrol agents, Transportation Security Officers, cybersecurity professionals, and more. Our responsibilities are wide-ranging, focusing on all aspects of the nation’s security to include first responders, cybersecurity, critical infrastructure, community resilience, ports of entry, and chemical/biological threats. We achieve our mission by partnering with the private sector, academia, and other government organizations to develop new technology capabilities and transition them to market. Our dedicated staff embody our commitment of mobilizing innovation to secure our world. Linking to external third party websites does not constitute endorsement of products, information or services contained therein. Visit www.dhs.gov/comment-policy to view the Moderation and Comment Policy associated with S&T's use of third party social media sites.