I've got a modest proposal to Ted Koppel and "Nightline": why don't you read one day the names and show the pictures of the 170,000 or so American servicemen and women stationed in Iraq and Afghanistan who every day are working their hardest to ensure that democracy takes root, terrorists are defeated, and these two countries have a chance to build a better future for their people. That might convince a cynic such as myself that you really care for the troops generally, and not just only when they can be cynically used to embarrass the Bush Administration.
It would take more than that to convince me, but this would be a start.
Koppel might look here for some ideas, too. But not here, unless he wants to play to his strengths . . . .