1. The TSA should commence developmental and operational testing of millimeter-wave-based portals to assess their effectiveness and suitability.

  2. As with x-ray-based passenger imaging, the TSA needs to address issues associated with personal privacy raised by millimeter-wavelength/terahertz imaging.

  3. The TSA should actively pursue joint projects through agreements such as cooperative research and development agreements with industry, academia, the Department of Defense, and the national laboratories to benefit from their investments in millimeter-wavelength/terahertz technology and applications.

  4. The TSA should follow a two-pronged investment strategy:

    • Focus on millimeter-wave imaging as a candidate system for evaluation and deployment in the near term, and

    • Invest in research and development and track national technology developments in the terahertz region.



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