 internally. And it's possible to check that during routine maintenance, but how often is that routine maintenance going to happen? Because carbon pipelines are so new that there's very limited regulation from PHMSA yet. So I think that's part of the rush to push these through is before there is adequate regulation in place. That safety aspect, so we're running at a higher pressure. CO2 is heavier than air, where if a natural gas pipeline was to burst, it will