Hunter Biden has arrived at the courthouse for Day 6 of his federal gun trial, accompanied by his wife Melissa Cohen Biden.

First lady Jill Biden arrived shortly afterward.

President Joe Biden's brother James Biden and sister Valerie Biden also arrived.

The two waited outside until the court opened at 8 a.m. ET.

As the second week of Hunter Biden's gun trial gets underway this morning, defense attorneys will confront their most consequential decision: whether to put their client on the witness stand.

To allow Hunter Biden to testify in his own defense would carry myriad risks, as the president's son would likely face a grueling cross-examination from a prosecution team that has shows itself adept at eliciting testimony supporting their central contention in the case -- that Hunter Biden was addicted to drugs at the time he purchased the handgun at heart of the case.

Jurors witnessed that on Friday, when Naomi Biden, the 30-year-old daughter of Hunter Biden, struggled to explain text messages she sent her father in October 2018 after he had purchased the gun -- in which she seemed to express concern about his addiction, despite testifying moments earlier about how "great" her father seemed at the time.

If Hunter Biden decides not to take the stand, jurors could possibly have the case by the end of the day, after closing arguments and jury instructions.

Court is scheduled to get underway earlier than usual today, at 8:15 a.m. E.T.

In an unexpected move, court recessed for the day following the lunch break, with the defense telling the judge they are "down to that last decision" -- suggesting that they will determine over the weekend if Hunter Biden takes the stand Monday in his own defense.

Defense attorney Abbe Lowell told the court the defense decided not to call one of its expert witnesses.

It also appears defense attorneys reversed course on testimony from Hunter Biden's uncle James Biden, who was already at the courthouse and who Lowell had earlier indicated would be testifying. James Biden was subsequently seen leaving the building.

Prosecutors said they are "still considering" whether they will put on a rebuttal case after the defense rests.

Judge Maryellen Noreika dismissed the jury, telling them to "enjoy a long weekend."

"We are starting to wrap the evidence in this case," she said.

The parties are scheduled to be back in court Monday at 8:15 a.m. ET.

Naomi Biden, the 30-year-old daughter of Hunter Biden, testified that her father "seemed great, he seemed hopeful" when she saw him on Oct. 18 or 19, 2018, in New York, where she was returning his vehicle to him -- several days after he purchased the gun at the center of the case and just days before his then-girlfriend Hallie Biden discovered and discarded it.

Earlier, in August, Naomi Biden described visiting him in Los Angeles, where he was in a drug rehab program. "He seemed the clearest I'd seen him since my uncle died," she said, referring to Hunter Biden's brother Beau Biden.

It was important testimony for the defense in their attempt to show that Hunter Biden was not using drugs around the time of the gun purchase.

Defense counsel Abbe Lowell asked Naomi Biden about the car trip she and her then-boyfriend took from Washington, D.C., to New York in mid-October 2018 to return her father's truck -- a Ford Raptor -- to him.

On cross-examination, prosecutor Leo Wise asked Naomi Biden if she ever witnessed her father using drugs -- she said she had not -- or whether she would know if he was using drugs based on his behavior.

"I guess not," she said.

Wise also established that Naomi Biden did not leave any drugs or drug residue in the vehicle before returning it to her father -- suggesting that the drug residue and paraphernalia Hallie Biden observed in the car days later arrived there after Hunter Biden retrieved the truck.

Jurors also saw some emotional text messages between Naomi Biden and her father during that mid-October timeframe.

"I'm really sad, I can't take this," she wrote her father, adding that "I really want to hang out with you."

"I'm sorry I've been so unreachable," Hunter Biden replied. "It's not fair to you."

On the stand, Naomi Biden spoke quietly, at one point saying, "Sorry, I'm nervous." Her husband, Peter Neal, sat in the gallery next to first lady Jill Biden, and had his hand over his mouth for much of the testimony.

Hunter Biden appeared emotional and was seen at times touching his face during her testimony.

When her testimony concluded, she embraced her father before leaving the courtroom, and court recessed for lunch.

Prosecutors have introduced Hunter Biden's infamous laptop as evidence while questioning FBI agent Erika Jensen, their first witness.

Prosecutors asked Jensen about email messages found on the laptop and in Hunter Biden's iCloud account that appear to be about his drug use in 2018.

The government had said in pretrial court filings that it was planning to introduce materials on the laptop as evidence in the case.

The laptop has become a symbol of the legal and political controversy surrounding the president's son in recent years. Attorneys for Hunter Biden had previously attempted to preclude the laptop as evidence in the trial, arguing that they have "numerous reasons to believe the data had been altered and compromised before investigators obtained the electronic material."

But special counsel David Weiss argued in court filings that attorneys for Hunter Biden had not "provided any evidence or information that shows that his laptop contains false information," and the judge agreed to admit it as evidence.

Data from the laptop was purportedly obtained and later disseminated in 2019 by a Wilmington, Delaware, computer repairman after the laptop had been dropped off at his shop for repair.

With that context in mind, prosecutors did not rely on the laptop on its own; investigators said they cross-referenced every email, WhatsApp message, iMessage, and text message with Apple Inc. to establish the credibility of the data.

"Ultimately, in examining that laptop, were investigators able to confirm that it was Hunter Biden's laptop?" prosecutor Derek Hines asked Jensen.

"Yes," Jensen said.

"How?" Hines asked.

"Among other things, there was a serial number that's on the back of this laptop that matches the Apple subpoena records that they obtained in 2019, so it matches the registration of this particular device to the iCloud account at a particular date," Jensen said.

"So from the data from the laptop and the hard drive, did you -- what did you do next, or what did the FBI do next when assessing the addiction evidence?" Hines asked.

"So from the data that was extracted from both the iCloud back ups and this -- the laptop, investigators were able to go through largely WhatsApp messages, iMessages, and text messages, and found evidence of addiction within the messages," Jensen said.

Prosecutors also showed jurors an invoice for $85 from the computer repair shop where Hunter Biden dropped off the laptop for repair, which had been sent to an email address belonging to Hunter Biden.

"You said Apple Inc. provided that ... from the iCloud?" Hines asked.

"Yes," Jensen said.