THE LEFTOVERS on HBO, during the end credits it caught my eye that Anthony DiMaria was credited as portraying Tactical Agent Kryczeck. I've watched the episode twice and it seems to me he must be the guy who gets shot through the throat in the first couple of minutes of the episode, but cannot be sure. They never speak anyone's name in the scene and I've watched the episode twice now. Not sure why they would have given this character a name instead of TACTICAL AGENT NUMBER 1 or some such thing.
Anyway, it looks like Jay Sebring's nephew has a pretty busy career going, judging from is IMDb page linked above.