old levine store. >> the shooting is all caught on a courthouse surveillance camera. 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