Bases as an FO? Very quick for everywhere but Brisbane, and for Brisbane a couple of years. Commands? I don't think anyone is going to be able to put a reasonable number on it at this stage other than to say, quite a while. There are too many factors to wash out including fleet changes, inactive pilot return, changes at VARA and general pilot retention. Quickest base for a command would probably be Adelaide, but with those above factors it's pretty hard to tell.