Sure. It really depends on the type of mode. Some of the requirements we have are legislated, and we do have regulations in that regard. With others, as with the rail industry, we work through a memorandum of agreement.
The objective for us is to achieve a certain behaviour as opposed to passing laws and regulations. It's making sure that the industry's prepared, that they've assessed the risk, and that they know what they're doing and how to respond to it.