Widow describes moment her husband was shot in movie theater after argument over texting: "I see his eyes are just glazed over"

The role of a tossed bag of movie popcorn played a central part Monday as a trial opened for a retired Florida police captain who fatally shot a man in a theater eight years ago. Meanwhile, the victim's widow, who was also shot during the incident, took the stand.

The question isn't whether Curtis Reeves shot and killed Chad Oulson at the theater on Jan. 13, 2014. It's whether Reeves felt threatened enough by Oulson to justify firing his .380-caliber handgun after the two argued over Oulson's cellphone use in the theater.

To prosecutors, the triggering event in the argument was Oulson's tossing of a bag of popcorn at Reeves - and that's not enough to claim self-defense.