Sounds like someone's angling for funding to keep employed for a few more years. He can answer his question about the effect on young children by checking RAAF publications.
CoodaKid3 (now Pilot Officer RAAF) was used as a pin-up boy by Defence Recruiting a couple of years back.
He was quoted as saying that he decided to become an airforce pilot at the age of 6, while sitting at the end of 11/29 Darwin with dad, watching the jets participating in Pitch Black take-off and land over his head.
Said jets would have included B-52, F-111, F-15, F-16, F/A-18, Harrier, Mirage 2000, Jaguar and KC-135. Plenty of close range jet noise to chose from and it doesn't appear to have affected his development.
(Of course the little bugger didn't tell his dad at the time. I had to read about it in the newspaper 15 years later.)