Welcome back, everyone. moments ago, white doves were released at las vegas's city hall to honor those affected by last week's shooting that killed 58 people and wounded hundreds more. just before the doves were released, vice president mike pence addressed the crowd at city hall. he emphasized the need for unity in the wake of the mass shooting, which was the deadliest in american history. just moments ago, the vice president visited a memorial of crosses set up, each one with the name of a victim from that shooting. meanwhile, law enforcement officials still struggling to find a motive behin...