At the bottom right of the screen, prosecutors say this surveillance video shows Curtis Reeves returning to his seat while the victim, Chad Oulson, is off screen.
Reeves appears to stand up towards the victim and objects are thrown.
Authorities say seconds later reeves pulled out a gun and fatally hit Oulson.
The two had reportedly been arguing about Oulson texting his daughter's babysitter.
Reeves left the theater briefly to complain to a theater manager but when he returned the argument escalated
Defense attorneys say Reeves, a retired Tampa cop. fired because he feared for his safety.