Jack looks startled for a moment. He wasn't expecting to hear that name out loud. It's like Sinclair is breaking into his thoughts in order to give -- not a glowing review of Fontaine, but not as bad a one as the bastard deserves.

"Did you -- know him?"

And secretly, he hopes and prays that Sinclair says no, or at least that they weren't friends. That would be even worse than being Ryan's man.