AUSSIE27 has told us how the Yanks do it, surely the RAAF could come some way to the party.
Could someone thats been on a USAF exchange enlighten us on the 'system' used in the US? I know a few details, low flying only on approved routes nb 500', regimented training areas and routes, zero flexibility. If you want to be an airline pilot - join an airline. Thank goodness the RAAF still has the flexiblility to produce a pilot who can think outside the box.
As for sterile airspace, well its not exactly sterile, there's a good chance of hitting one of the other squadrons if you don't lookout/listenout. No requirement to throw civil aircraft into the mix for realism. Irrespective of that, in this unique environment, instructors still have the flexibility to self separate as required to get realistic training, probably unfeasible in a civil environment.