evening. we ll see you in half an hour at 6:00. tonight, breaking news. the showdown between the u.s. and iran. after iran shoots down a u.s. navy drone. tonight, right here, the new u.s. surveillance showing the massive $100 million drone as big as the wingspan of a 737, plummeting from the sky. hit by the iranians, they say it was in iranian airspace. the u.s. says that s not true. and tonight, president trump now saying maybe iran made a mistake. that it could have been someone, quote, loose and stupid. and breaking now as we come on the air, what we re now learning after an emergency meeting in the situation room. martha raddatz and mary bruce standing by live. the stunning turn tonight in the war crime trial of a former navy s.e.a.l., accused of murdering a prisoner. a fellow navy s.e.a.l. taking the stand today and telling the court, i was the one who
murdered the prisoner. the courtroom shocked, prosecutors yelling. we re tracking a major storm system up and down th
Fellow s.e.a.l. scott later testified, gallagher s got a wife and family. i don t think he should be spending his life in prison. gallagher s defense attorney pouncing. today, for the first time, somebody went to one of these witnesses and actually asked the real question what is the cause of death? and what we learned, chief gallagher is not guilty of murder. so, let s get to will carr with us live tonight. will, you ve been tracking this case and you said there in your report that this navy s.e.a.l. who testified today had been granted immunity. so, what does this mean after what he said today, does he face possible charges? reporter: david, it means he cannot be charged with murder, but could still face a perjury charge. keep in mind that part of the s.e.a.l. s creed is, my word is my bond. tonight, that s.e.a.l. says he s the one who killed the teenager, not his boss, who is on trial. david? really something in court today. will, thank you. we re going to move on now