"Jim Macklin" writes:

Sure, and ATC can make those other airplane instantly become
ghosts, not take any volume or be physically manifest in the
air.

Those other airplanes can easily get out of the way, as they are not involved
in an emergency. It's not as if these aircraft are only twenty feet apart.

ATC can simply broadcast a command, "ALL aircraft, there is
an emergency in progress at DFW, all aircraft fly away,
maintain VFR and good luck!"

It's not quite as simple as that, but sometimes it's close. It helps that
other pilots will probably hear what is going on and will be prepared to do
whatever is required to assist.

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