They find ways and we find new ways to combat those approaches and we'll continue to pursue that.
For example, where individuals are finding ways to sneak up on our perimeter, we've been experimenting at a couple of institutions with thermal imaging, infrared radar imaging technology, to detect them when they're on our perimeter. We're finding that it's a good tool, and it's working—it's allowing us to detect people before they get close enough to launch the drugs in.
We continue to work with our partners in other countries to find new approaches and new techniques.