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Under Secretary for Science and Technology

A high-ranking official within the Department of Homeland Security who oversees scientific research, development, and innovation to support the department's mission.

Homeland Security Act of 2002

The law that established the Department of Homeland Security (DHS) following the September 11, 2001, terrorist attacks, outlining its mission and responsibilities.

Mitigate

To make something less severe, serious, or painful; in this context, to reduce the harmful effects of climate change on security.

Homeland Security

The national effort to prevent terrorist attacks within the United States, reduce the country's vulnerability to terrorism, and minimize the damage and recover from attacks that do occur, and to protect against other hazards.

Critical Infrastructure

Systems and assets, whether physical or virtual, so vital to the United States that the incapacity or destruction of such systems and assets would have a debilitating impact on security, national economic security, national public health or safety, or any combination of those matters (e.g., power grids, water supply, transportation networks).

Appropriations

Money set aside by Congress for specific purposes or programs, which agencies can then spend.