He said that Muhammad's car - rigged with a gun port and stocked with a .223 Bushmaster rifle, the match to a glove found at a murder scene, a computer with maps of the slayings' locations and drafts of threatening messages - proved that the murders were deliberate and premeditated. He called the car "a perfect sniper's lair for a coward."
"This man had two weapons in his killing spree - he had the gun and he had Lee Boyd Malvo, and he was an expert at manipulating them both," Chopra said, alleging that Muhammad ordered the younger man to shoot from outside the car while he fired from inside the trunk.
Chopra stressed that even without Malvo's testimony, the state had built an overwhelming case against Muhammad with more than 300 pieces of evidence and the testimony of more than 125 witnesses.
After speaking for nearly an hour, Muhammad began his attempt to debunk the evidence. He couldn't have shot people from the back of his Caprice, he said, because the state did not show evidence of hair grease or fingerprints inside the trunk. DNA from a dark brown hair found in a duffel bag at a murder scene couldn't have been his, he said, because he has black hair.
And why, he asked the jury, was no evidence of smoke residue in the car presented if the Bushmaster rifle found there had been shot from the trunk so many times?
Muhammad compared himself to Jesus and other martyred figures. He addressed the jurors as "people," and as the afternoon wore on, he shouted, leaned forward and waved his arms.
Winfree, in her closing rebuttal, said that Muhammad did not come east from Washington state, as he claimed, simply to find his children, who were living with their mother in Clinton.
"Do you think he was looking for his children when he ran two stop signs before he shot Pascal Charlot?" she said, referring to the Oct. 3, 2002, killing of the elderly man in Washington, D.C.
When Winfree told jurors that Muhammad "reacts badly to lack of control," Muhammad forcefully objected.
Trial observers were taken aback by Muhammad's closing.
"He is a person of control," said Mary Branch, 49, of Silver Spring. "He wants to manipulate people."
Emily Thoresen, 20, a mortgage company inspector, said Muhammad's remarks were shocking. She said she believed he was guilty before, but after witnessing the closing statement, "I felt it," she said.
"How could you be so heartless?" she asked.
Sun reporter Rona Marech contributed to this article.