The day's final witness was Ed Banner, the 80-year-old Navy veteran who recovered Hunter Biden's firearm from the trash receptacle outside a supermarket after Hunter Biden's then-girlfriend Hallie Biden had disposed of it there.
Banner described finding the firearm and other items as he was rummaging for recyclables that he would often drive to New York to return for money.
Defense attorney Abbe Lowell had previously suggested that cocaine residue discovered on a leather pouch that held the gun could have been tampered with between the time the firearm was discarded on Oct. 23, 2018, and when it was tested in a lab in late 2023.
"This may sound like an unusual question, but does anyone in your household use cocaine?" Derek Hines asked Banner.
"No," Banner said, appearing somewhat surprised by the question.
Banner also denied wrapping the firearm in a sock, as a Delaware state trooper suggested in earlier testimony.
"I don't know nothin' about no sock," Banner said.
Prosecutors said before court concluded that they have two witnesses left -- a DEA drug specialist and an FBI chemist -- and that they intend to rest their case on Friday morning.
Defense counsel said they would call two or three witnesses and would likely rest their case by the end of the day on Monday.
As Lowell previously suggested, he may call James Biden, the president's brother, and Naomi Biden, the president's eldest granddaughter.
He also said that no decision has yet been made on whether Hunter Biden will testify in his own defense.
Court then was recessed for the day.