after they took evasive action to avoid a missile. the error was not discovered for 30 minutes. 22 people died in the assault. and good morning. i m carol costello. thank you so much for joining me. an act of self-defense. that s the claim from a chicago police officer who s accused of shooting and killing an african-american teenager. authorities say veteran officer jason van dyke fired 16 shots at laquan mcdonald the night he died. that officer now charged with first-degree murder. i m not going to show you the entire video of this incident because it s very hard to watch. but as you can see, mcdonald moves down the street toward police vehicles as the officers draw their weapons. that s when van dyke appears to fire his gun. and then after mcdonald falls to the ground, he s shot an additional 15 times. an officer comes out and kicks the five from his hands.