But how long does it take for the munitions to detonate over the ground to when the aircraft is the target? Particularly the modern-era "dumb" bombs used over syria.
I'd imagine that takes a bit of time to hit the ground, unless it's rocket propelled. So you will probably hear the jet just as it's about to detonate, no?
It uses a lot of fuel, you can't maneuver easily, and you fly over your target too fast.