Hmmmm, a luxury we don't enjoy here, the military do as they please!
We have the joys of the military (read U.S.) operating 'due regard' hourly in this FIR so in the middle of your busy arrival and departures sequences, a loafing P3 or 2 fly maritime patrol at IFR levels or IFR +500 foot splits, often not talking to anybody. Then there are the carrier groups that launch the fleet right through your airways providing over the years numerous air misses and close calls.