Much of the design of the technology is very akin to many of the recommendations that came out of the Macondo incident in the Gulf of Mexico. It's really looking at the capability to handle very large pieces of pipe, very heavy pieces of pipe, and the ability to shear that pipe and seal it in the same operation.
We've proven that the concept works. We're doing the testing, both for a system that would be installed at surface and for a system that would be installed subsea. That's been focused on the Arctic environment, but, as you can imagine, many people have inquired about that system, based on the outcome of the Gulf of Mexico incident.