arroyo on the right guns down ex-wife marabella strada and one of their sons, 23-year-old david arroyo jr. a massive gun battle erupts between arroyo and officers at the courthouse entrance. >> we're getting shot at. >> we're on the way. >> deputy sherman dollison filling in as a bailiff moves outside to confront arroyo as he opens fire. >> when you watch the video, you see the officers are doing exactly what they're taught to do, that's run into the gunfire to try to stop the perpetrator. >> where is he now? >> he's outside the back door. >> the bailiff is outside the back door? >> i think he went out. he's been shot. they're going to need an ambulance. >> dollison is shot multiple times and falls to the ground outside the courthouse, critically injured. other officers are shooting arroyo but he's not going down. unknown to them at the time, he's wearing protective body armor. still, the officers keep coming. >> one was critically injured with numerous gunshots in front of the courthouse. he kept shooting. even when he was shoot numerous times, he still rolls up and tries to shoot. >>