Hunter Biden's daughter Naomi took the stand as the defense's third witness.

Jason Turner, an employee at the gun shop that sold Hunter Biden the Colt revolver at the center of the case, corroborated on the stand clerk Gordon Cleveland's earlier testimony of the sequence of events that occurred in the store when Hunter Biden filled out the ATF form and purchased the gun.

Turner, who appeared defensive and confrontational during some of his testimony, testified that he never spoke to Hunter Biden.

When shown the ATF Form 4473 that Hunter Biden filled out, Turner said Hunter Biden provided his car registration as an alternate form of ID because the passport he provided did not have an address.

The defense said in court papers filed earlier that confusion over how Hunter Biden's form of ID was recorded on the ATF form raised questions about "who wrote what on the form, and when."

When defense attorney Abbe Lowell, questioning Turner, highlighted the box on the form that asks for the type of alternate ID, it was blank.

"When I wrote that out, I wrote 'car registration,'" Turner said. "It's not there," he testified.

Lowell also pressed Turner on what he was doing after Hunter Biden's background check came back until the firearm was purchased.

"I would have put on my ritual tone and sat in a marble room," Turner said sarcastically.

Ron Palmieri, the owner of the gun store, then took the stand.

As Hunter Biden's defense case gets underway, two more members of the Biden family have entered the courthouse: Naomi Biden and James Biden.

Naomi Biden is the daughter of Hunter Biden and granddaughter of President Joe Biden.

James Biden is Hunter Biden's uncle and President Biden's brother, who Hunter's attorney told the jury during opening statements paid for some of Hunter Biden's rehab and lived with him briefly afterward.

Defense attorney Abbe Lowell previously suggested both James Biden and and Naomi Biden could take the stand for the defense.

After jurors left the courtroom for a break, defense attorney Abbe Lowell moved for an acquittal for by orally submitting a Rule 29 motion, citing constitutional challenges and an insufficiency of evidence.

Judge Maryellen Noreika indicated her skepticism at the longshot bid with a chortle as Lowell described the legal underpinnings of his motion.

"You're laughing," Lowell said, before joking that her "smile" suggested she was "likely skeptical."

Both Lowell and the judge agreed that one of his claims in particular was an "interesting concept."

Lowell then told the court that the first two witnesses he plans to call for the defense are Ronald Palimere, the owner of the gun shop where Hunter Biden purchased the Colt revolver at the center of the case, and Jason Turner, an employee of the store.

Hallie Biden, Hunter Biden's former romantic partner who is the widow of his brother Beau Biden, has taken the stand as the prosecution's next witness.

Prosecutors have said they expect her to testify about Hunter Biden's drug at the time of his gun purchase in October 2018.

Before gun store clerk Gordon Cleveland stepped off the stand, he testified that Hunter Biden did not exhibit any symptoms of drug or alcohol abuse when he purchased the gun at the center of the case.

When asked by defense attorney Abbe Lowell if Hunter Biden exhibited any symptoms at the time of his gun purchase, such as being "glassy eyed" or smelling of alcohol, Cleveland replied, "None at all."