"To my knowledge, the Department of Homeland Security has focused on detection devices that are large, expensive, use a large amount of energy, and cannot easily be placed in or on a shipping container"

This quote by Jim Ryun recommends that the Department of Homeland Security has actually been purchasing detection devices that are not practical for use in shipping containers. These devices are big, pricey, and need a lot of energy to operate, making them difficult to set up in or on a shipping container. This indicates that the Department of Homeland Security has not been successful in establishing detection devices that appropriate for use in shipping containers. This might be due to the reality that the technology is not yet advanced enough to produce a gadget that is little, efficient, and cost-efficient. It could likewise be due to the truth that the Department of Homeland Security has not been able to allocate sufficient resources to establish such a gadget. Whatever the factor, it is clear that the Department of Homeland Security has actually not been able to develop a detection gadget that is suitable for usage in shipping containers.