That was one of the more nauseating things I thought about as it sank in: there were pilots up there intercepting the plane, and they'd be ordered to shoot it down, and they'd have to pull the trigger, and live with that action. I'd like to think that, in that situation, I'd do what's necessary and shoot down the plane...but I probably couldn't live with myself afterwards. I'd probably have committed suicide inside a month.
Hearing it was basically a suicide mission, that they were unarmed (side note: I though F-16s always carried some gun ammo for CG reasons - live and learn) is even more nauseating.