About the Super Hornet deliveries ..... what is implied ?

They wouldn't need to announce the arrival of F-18's, they're so loud that you can hear them for miles. Shoulder launched SAM's aren't going to be very effective against them, by the time you hear them, it's too late to acquire a target, and they'll be out of range. Anyway, who in Australia is going to shoot down Australian aircraft, if they're trying, then you have some very serious security problems.