concerns for these brave marines participating in training exercises up there in the northern territory, where the marine rotational force based in darwin is there on a semi-permanent basis. now, as i said, information is just coming out. we just moments ago got this statement from the u.s. defense department, saying that these three marines had sadly died. australians, as i mentioned, very concerned about this. this happened just weeks after an australian helicopter went down in joint training with the u.s. in queensland, killing australians onboard there, too. so a tragic time in australia right now. thoughts with the families of the three marines who died. all right. we ll stay on this story. and bring more updates as we get them. cnn s an gust watson in sydney, australia. thank you so much. well, three people are dead after a mass shooting in jacksonville, florida, that