So is it ok for a surgeon to bring his kid to work and let his kid cut someone open? It's supervised so it must be ok! Come on guys!!
From having a father who is a physician, and having been allowed into the OR on occasion to observe an operation in progress, I can assure you that "Bring Your child to work day" in a medical setting can and does happen safetly. While I wasn't handed the knife, I was allowed to ask questions on what the surgeon was doing, and ask question about the ekg rythm, and the ventilator, as well as "feel" the ambu bag as it breathed for the patient in automatic mode. I was instructed on putting on scrubs, and was never in any position to interfere with the doctors at work. Unfortunately such an opportunity would be much more difficult these days with HIPPA rules.
Now to the incident at hand, from listening to the recording, This is much to do about nothing, at any time if the kid had made a mistake in callsigns (Not very likely.. in a REPEAT after me scenario.) for take off clearences, the controller (Which was also heard on the freq.) would have also been plugged in with a headset and made a correction just like they do when they train new controllers.)
I say good for the controller, and good for KJFK tower for allowing this to take place, it's not often any more kids get a REAL opportunity to be shown where all the effort they are putting in at school will pay off.
Just my two cents.