"My intent was to stop the attack, not necessarily end a life," he said. "It just worked out that way."
'There was no gun'
But Assistant State Attorney Erin Wolfson said Wednesday that Dunn's claims don't add up.
She noted that Dunn fired 10 shots at the SUV, three of them while the car was fleeing.
He never took cover -- but instead opened his car door -- even though he would later tell detectives he had seen a weapon, she said.
"There was no gun," Wolfson told jurors.
In addition, she said, he did not tell his fiancee, Rhonda Rouer, that he had seen a weapon until more than a month later.
Dunn also left the scene of the shooting, went back to a hotel where they were staying and walked his dog, she said.
And he returned the next day to his house -- more than two hours away -- all without calling 911, Wolfson said.
Dunn has testified he described the music to his fiancee as "rap crap."
In the parking lot, as the music blared, "his blood started to boil; he didn't like the music that was coming out of the car next to him; he got angrier and angrier," Wolfson said.
Dunn rolled down his window and asked the youths to turn it down, which they did, but then turned it back up, Wolfson said.
"He got angry at the fact that a 17-year-old kid decided not to listen to him," she said, adding that Dunn then pulled a 9 mm gun out of his glove box and shot "systematically and methodically" at the SUV. "Nobody denied that Jordan was talking back. But this defendant took it upon himself to silence Jordan Davis forever."
Dunn testified Tuesday that he saw Davis reach down and pick something up, and that he saw about "4 inches of a barrel" from a 12- or 20-gauge shotgun above the window.
'You're not going to kill me'
He muttered aloud to himself, " 'You're not going to kill me, you son of a bitch,' " as he opened the glove compartment, grabbed his pistol, dropped the holster at his feet, chambered a round and began firing, he said.
Nine of the 10 rounds hit the car, and three of them struck Davis, one of them cutting through his liver, his lung and his aorta.
Wolfson rejected Dunn's assertion he had been trying to de-escalate the situation and he feared for his life.
Strolla, the defense attorney, noted that no witnesses had accused Dunn of using any hate words and testified that his client had just come from a wedding, where his ex-wife said he had appeared to be in a good mood.
Strolla noted that the SUV departed the gas station after the shooting and was gone for three minutes before it returned, enough time for the youths to have dumped a gun.
Detectives did not search the area for days after the shooting, he said.
The court has decided not to release the identifications of the jurors, fearing they could be the subject of threats, but a court document shows the jury is made up of four white females, two black females, four white males, an Asian female and a Hispanic male, plus four alternates.