Theodore Wafer pauses at the end of Day 3 of his trial, Monday, July 28, 2014, Detroit, Mich.
A man on trial for killing an unarmed woman who showed up drunk on his porch told jurors on Monday that when he bought the gun he shot her with, it was a form of home security he could afford.
Theodore Wafer took the witness stand on the seventh day of testimony in his trial on second-degree murder charges in the Nov. 2 slaying of Renisha McBride.
Wafer's lawyer, Cheryl Carpenter, asked if he had a security system installed at his home. He said no.
"I think everybody would like to have a security system in their house," he said. "I couldn't afford it."
Wafer said he bought the 12-gauge shotgun used in the killing about six years ago.
"I just thought it was time I had some kind of security I could afford," he said softly and methodically.
"My front door and screen door are usually always locked," said Wafer, adding that the same goes for his back door. He said he uses the side door most often to get in and out and that the screen door on the side of his house is usually not locked.
Civil rights activists immediately seized on race after the November shooting - Wafer is white and McBride was black - and some likened it to the 2012 killing of Florida teenager Trayvon Martin. But race faded as an issue in the case and wasn't mentioned as a factor during court hearings that preceded the trial.
Wafer, 55, says he shot McBride in self-defence after she showed up on his porch at around 4:30 a.m. Earlier in the trial, prosecutors played a recording of Wafer telling an officer that he didn't know the gun was loaded.
Prosecutors say Wafer didn't need to use deadly force against McBride and that he could have remained in his home with the front door locked and called police instead of shooting her.
To acquit Wafer, the jury would have to find that he shot McBride because he had a reasonable and honest fear for his life.
Earlier on Monday, a firearms expert testified for the defense that Wafer and McBride were both apparently standing close to his screen door when he shot her through it, killing her.
Retired state Trooper David Balash said the hole in the door made by the shotgun blast shows it was near the door when he fired it. He said the buckshot wounds on Renisha McBride's body show she was standing near the door when Wafer shot her last fall.
"My opinion is she was very close to the door ... within a foot," Balash told the jury at the outset of the seventh day of testimony in the trial.
It is not clear how or why she showed up on Wafer's porch. They didn't know each other.
Dr. Werner Spitz, a former medical examiner, testified last week that a laceration on McBride's hand shows she may have injured it while pounding on Wafer's door. But the doctor who performed the autopsy found nothing remarkable about her hand.