[That hits him hard. He remembers that guy he talked to, the Motorcycle Boy. The way he just vanished, and it was like he had never even existed.]

So, in other words, if the Admiral doesn't see someone playing his games he gets rid of them. [The hostility ebbs, but if anything, the look he's eyeing Bourne with now is even worse. He looks furtive, wary. It's a desperate, dangerous look.]