Navy Seal's wife and brother discuss murder charges

Edward Gallagher faces a maximum life sentence if convicted; President Trump has hinted at the possibility of a pardon.
2:11 | 06/23/19

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Transcript for Navy Seal's wife and brother discuss murder charges
There are new developments in the case. Of the Navy S.E.A.L. On trial for murder. The wife speaking out about those charges. Marci Gonzalez has more. Reporter: This morning the wife of a decorated Navy S.E.A.L. Charged with murdering an ISIS prisoner opening up to ABC news about the major bombshell dropped in this trial this week. I feel more confident than ever that my husband will finally get his day in court and have the ability to prove his innocence. Reporter: Her husband, chief Edward Gallagher, is accused of war crimes, including shooting at civilians and killing this wounded ISIS fighter in 2017. Then, that major twist, fellow Navy S.E.A.L. Corey Scott, one of the prosecution's key witnesses, testifying, I saw Gallagher stab him in the neck. Then telling the jury he, not Gallagher, killed the prisoner by blocking his airway, saying it was an act of mercy to keep the teenager from later being tortured by Iraqi forces. The claim stunning everyone in the courtroom. In a lot of ways it doesn't change the defense because our defense has always been consistent. The truth is Eddie Gallagher's best defense, and he did not kill this ISIS terrorist. Reporter: The prosecution accusing Scott of lying to protect his fellow S.E.A.L. Since he has immunity and can't be charged with murder in this case. The Navy saying the testimony has no impact on the trial, telling ABC news the government will not be dropping premeditated murder charges against chief petty officer Gallagher despite petty officer Scott's testimony. The credibility of a witness is for the jury to decide. Gallagher has pleaded not guilty. His attorney and family maintain that the accusations against him were fabricated by disgruntled younger S.E.A.L.S trying to get rid of their chief. These witnesses were really exposed in my mind this week. Knowing that this is the government's best effort at a prosecution, honestly, it relieves so many of my fears. Reporter: And Gallagher faces a maximum of life in prison if convicted, though president trump has hinted at the possibility of a pardon. We're told the prosecution has several more witnesses to call before the defense presents its case to the jury. Guys, back to you. It's a case we will be following.

This transcript has been automatically generated and may not be 100% accurate.

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