Certain bomber crews must receive their orders while in the air.
Movie stuff.
Orders/targets can be changed while airbrne,
but you want crew briefed as much as possible in secure location BEFORE flight.
I had some university classes with people who are journalists today. None of them would know the difference between a briefing and an order. And regardless of the publications they work for now, they’re all anti-defense. I read between the lines and watch mostly for the quotes.