A small but important point FishHead: don’t conflate the limits on Defence’s power to declare restricted airspace under the Defence Act as being the limits of the Commonwealth’s power to declare restricted airspace. The former powers are a subset of, not co-terminus with, the latter powers. The fact that a Wing Commander may not have power under the Defence Act to declare restricted airspace "outside the 12 nm limit" does not mean that the Commonwealth does not have that power. I think you’ll find that the PRD review bogged down at the point it discovered that old defence – repeat defence – declarations might not be valid.. .. .If you read my posts at the link I gave above, I try to explain this point in some detail.