conflicts at work. hala gorani takes us through the events as they happened. >> allison parker interviews a guest. moments later, horror as she and her cameraman adam ward are shot dead while on air. as adam falls, his camera captures a glimpse of the shooter. his weapon still raised. the gunman is vester l. flanagan, a former reporter at wbdj. williams posted a video of the shooting from his perspective on social media. proving he was there. williams' tweets hint at a motive. apparent gripes with his former colleagues. according to an exemployee, williams was fired from wdbj. the station has been left reeling after first announcing the death of their colleagues.