Trial gets started for a San Diego police officer charged in the road rage shooting of a woman and her eight-year-old son.

This case involves a road rage incident. Officer Frank White says it was self-defense. He says 27-year-old Rachel Silva was the aggressor.

Authorities say Silva chased White's car into an Oceanside parking lot and rammed her vehicle into his, after he side-swiped her.

Her son was caught in the line of fire.