Columbia subject headings:
National security--Technological innovations--United States--Evaluation.
United States. Dept. of Homeland Security. Science and Technology Directorate--Management.
Harvard subject headings:
National security--Technological innovations--United States--Evaluation.
United States. Department of Homeland Security. Science and Technology Directorate--Management.
Princeton subject headings:
National security--Technological innovations--United States--Evaluation.
United States. Department of Homeland Security. Science and Technology Directorate--Management.