Certainly we export grain all over the world, but I think it's important to point out that the grain we export is approved for both environmental and food safety, so that has to be done before the grain can go anywhere.
I think what you're getting at is concern that somehow the seed sterility technology will get into conventional varieties in the developing world. The reality is that even if it did out-cross to a conventional variety in the developing world—which in and of itself scientifically is not likely from an out-crossing standpoint, because they grow different varieties than we do in North America—plants are programmed to always be able to reproduce. They select for genes that encourage their reproduction, so scientifically it's very unlikely that a gene for not being able to reproduce itself is going to be selected in the generational process. There are a series of scientific barriers that would have to be overcome before this could happen.
Of course we also sign on to several international protocols, and the biosafety protocol is an international agreement that's under development. If and when this technology comes forward, it would have to be applied under those international agreements, so I don't anticipate that this a problem we would foresee.