shooter, inmate, reportedly grabbing a gun from a deputy, opening fire. in addition to killing the two bailiffs he wounded a deputy sheriff and at least one civilians days after an army vet killed five dallas police officers. much more on the investigation of the dallas ambush and what we re learning about that shooter tonight, including a large stockpile of bomb-making materials found during the search of micah xavier johnson s home, telling police the materials made it clear johnson was not a novice. he knew what he was doing. out of st. joseph, michigan, 100 miles east of chicago. deadly courthouse shooting. as we said, two bailiffs have been killed today in a gunfight. ryan, what more can you tell us? reporter: very heavy hearts here. we just finished talking to the sheriff about 20 minutes ago. there are still s.w.a.t. officers just behind me. this remains a very active scene. this has really impacted this community as they re talking about this. what we know is inve