There is the possibility that under different conditions this would occur. The body scan will depend on what technologies we're going to use, and there's still a lot of reviewing to be done as to what type of technology it will be and where the units will be placed within the institution.
The ion scan, however, is not just for drugs. It's for other things as well. These systems will be working together. I don't see a scenario in which we'll just completely eliminate ion scans.