ICAO D
Bing
What makes you think the "world of reality" is ONLY Oz?
And, as far as your last post is concerned, someday UAV may well BE crop dusters.
UAV = ADS-B - it's a given. Like Leaddy you are stuck in 'today syndrome'. Go play on your Whizzer thread - well done Max 1
We need to consider an airspace when UAV emerge from being military toys to a commercial proposition. General aviation is an example of something that emerged from the wars - open your mind