[alistairSH]

Uh, that's not correct. The back-seat in the Growler is an Electronics Warfare Officer. He may be monitoring the radio, but he's not just a second pilot (as is the case with commercial passenger aviation); it's a completely distinct job with a distinct training program.

And of course, most modern fighter jets are actually single seat. And they operate just fine that way.

[tintor]

What does Electronics Warfare Officer in the plane do, at the air show?

[alistairSH]

Ballast.

Only half kidding. They fly with a pilot and an EWO, that's procedure. Not much more to it.