The prosecutor, Capt. Jason Quinn, scoffed at the defense's claim, saying Jackson made a conscious decision to leave his room and walk to Fonteneaux's, where he stood over her while she slept.
After stabbing and slashing Fonteneaux, "he decides to reach down and choke her until she is no longer in the misery that he put her in," Quinn said.
Quinn put a photo on courtroom TV screens that showed Brandy Fonteneaux after she was killed, sprawled on the floor of her room, partially unclothed with a tangled bedsheet covering part of her body.
"Sgt. Jackson wasn't negligent," Quinn said. "He intended to do what he did. He intended to kill Specialist Fonteneaux."
Jackson, an eight-year Army veteran from Rancho Cucamonga, Calif., was with the 576th Engineer Company, 4th Engineer Battalion. Fonteneaux was a food operations specialist in the 4th Engineer Battalion.
Brandy Fonteneaux knew Jackson but they were not close, according to the aunt who raised her, Bevenly Thomas. Fonteneaux had told her family that Jackson confided in her about his crumbling marriage.
Thomas said she asked Fonteneaux if she and Jackson had a romantic relationship, and she replied, "No, Mom. He's married. He's too old."
Jackson's father, Willie Jackson, broke down as he told the panel he had never known his son to be violent. He said he's still in denial about what happened.
Fontenaux's mother told the panel that she still looks at pictures of her daughter and frequently visits her Facebook page. She said the family isn't decorating for Christmas this year.
"We're still getting together as a family, but there's going to be one that's missing," Verona Fonteneaux said.
Find Dan Elliott at http://www.twitter.com/DanElliottAP.