CENTENNIAL, Colo. - Closing arguments are expected in a civil trial over whether the company that owns a Colorado movie theatre should have done more to prevent a shooting that left 12 people dead.

Attorneys could make their final appeals to jurors on Wednesday. Jurors are being asked to determine whether, in an age of mass shootings, Cinemark should have foreseen the possibility for violence during a packed midnight movie premiere in July 2012.

James Holmes is serving a life sentence for the attack, which also left more than 70 others injured.

Twenty-eight survivors and families of the dead sued Cinemark in state court, arguing the theatre had no armed guards, and security was otherwise lax.

Cinemark attorneys say nothing could have stopped the heavily armed Holmes. They say mass shootings are still too rare to have been predicted.