Science and Technology Directorate of the United States Department of Homeland Security
From LINKS Community Center
https://www.dhs.gov/science-and-technology
The Science and Technology Directorate is a component within the United States Department of Homeland Security. DHS-S&T serves as the research and development arm of the Department as it fulfills its national security mission.
Source: https://en.wikipedia.org/wiki/DHS_Science_and_Technology_Directorate