As far as unattended: in sum, the technology allows it, but the regulatory structure may not be comfortable with it in the near term. It's not the deal breaker you might think in terms of economics. We are talking about more reliable power at multiples less with prices that don't require the complicated hedging and regular bulk purchases as oil and gas. Generally, we are looking at staffing structure similar to oil rigs- weeks on, weeks off. As regulators and public understand operation, we could transition to remote staff managing sites. Truth is that the technology shuts itself down in case of any bad event (see EBR for similar, really amazing) and there would be almost nothing for on site personnel to do, but there is a perceived safety blanket with having a warm body on site.
Does that answer your question?