Earlier quoted context omitted.
My wife works in import/export compliance. There are many regulations associated with many types of technology requiring you to get licenses, "know your customer", etc. I would guess the latest and greatest of this tech for would be governed by EAR if not ITAR regulations. ref: http://ooc.usc.edu/overview-ear-and-itar
Yep, but that applies (maybe) to the US. What about any other country, for the sake of the example, Wherevereristan ? Do they have the same rules?
So in that sense, if Whereveristan wants to sell the airport X-ray equipment they can get, it isn't going to be useful in determining what can pass US screening.