It appears to be a mere update:
“National Defense Resources Preparedness” executive order: Power grab or mere update? « Hot Air: We’re getting a lot of e-mail this weekend about an executive order issued on Friday afternoon by President Obama titled “National Defense Resources Preparedness.” While the timing of the EO is curious — why send it out on a Friday afternoon when an administration is usually trying to sneak bad news past the media? — the general impact of it is negligible. This EO simply updates another EO (12919) that had been in place since June 1994, and amended several times since.
Let’s start with Friday’s EO: