Jason only played on that first album. I college roommate actually had their first album, so that's where I heard of them. We saw them on the Doomsday tour, but they had a fill-in bassist. I forget the guy's name.
But then Troy Gregory joined and they recorded No Place For Disgrace and When The Storm Comes Down, two of my all time favorite metal albums, and I'll take both over anything that Slayer, Megadeth, or Anthrax has done.