BAGHDAD, Iraq (CNN) -- Darryl Mathis waits in his Pensacola, Florida, home for the body of his 24-year-old son to return home from Iraq. Mathis, a military veteran himself, was seething with anger Thursday as he spoke about the death of Army Staff Sgt. Darris J. Dawson.



An unnamed U.S. soldier is accused of killing Army Staff Sgt. Darris J. Dawson in Iraq on Sunday.



Dawson, and Sgt. Wesley Durbin, 26, are said to have been shot and killed by another U.S. soldier on Sunday at a base south of Baghdad.



Darryl and his wife, Maxine (Dawson's stepmother), say the military has told them nothing about the incident: no details on his death, no information at all.



His voice shakes as he says he believes that the military has let him down.



"I'm very disappointed -- very," he said. "If I would get a straight answer, if they would actually tell me what's going on, I would have something to work on; but right now, I have nothing to work on. Everything I'm getting, I'm getting from the media."



His wife sobs as she says her stepson's death was foreshadowed by a phone call he made to her from Iraq.



"He said that he was more shaky sometimes of the soldiers than of the enemy, because of the young guys over there."



She said she asked him, "What in the world do you mean? You're afraid of your own soldiers?"



" 'These kids are trying to fight a war they know nothing about. ... They're jumpy. ... They're more scary than the enemy,' " she said he told her.



"And I said, 'Oh, God,' " said Maxine Mathis.



On any given day, CNN receives dozens of detailed news releases from the U.S. military, including those announcing U.S. military casualties. In the cases of Dawson and Durbin, there was no mention of their names, and the releases were terse.



"A multi-national division center soldier died this morning of non-combat related causes," the first release read. "The cause of death is under investigation."



A second release came later in the day.



"A second multi-national division center soldier died this morning of non-combat related causes. The solider died of wounds September 14 at a coalition forces combat Army support hospital," it read. "The incident is under investigation."



Inquiries Thursday from CNN were met with a news release that a press officer said had been drafted Wednesday. However, the release had not been e-mailed to reporters Wednesday, as is customary.



After naming the two soldiers and giving their rank and unit, it reads, "A U.S. soldier is in custody in connection with the shooting deaths. He is being held in custody pending review by a military magistrate. The incident continues under investigation." The release gives no other details.



The U.S. military is classifying the death of Sgt. Dawson as "non-hostile," something Dawson's father finds puzzling.



"I don't know. I really don't know," he said. "I just can't get it together with that. I had never heard that before. 'Non-hostile' in a war zone?"



Lt. Col. Paul Swiergosz is a public affairs officer for the area in Iraq where the incident took place. He says the "non-hostile" death classification was given "because the deaths were not the result of hostile enemy action." But details on what happened remain scarce.



After asking, CNN received an e-mail press release from Gen. Tony Cucolo, commanding general of the Third Infantry Division that a press officer said had been drafted on Wednesday. The release, however, had not been e-mailed to reporters, as is customary.  "We do know one soldier, a fellow noncommissioned officer, allegedly opened fire and mortally wounded his squad leader
who is being held in connection with the killings? Who was killed in Iraq this week? who were killed in Iraq this week? What is the U.S. military's classification of the death? what Dawson's father says?
An unnamed U.S. soldier Sgt. Wesley Durbin, Dawson, and Sgt. Wesley Durbin, non-combat related causes," "I just can't get it together with that. I had never heard that before. 'Non-hostile' in a war zone?"
question: who is being held in connection with the killings?, answer: An unnamed U.S. soldier | question: Who was killed in Iraq this week?, answer: Sgt. Wesley Durbin, | question: who were killed in Iraq this week?, answer: Dawson, and Sgt. Wesley Durbin, | question: What is the U.S. military's classification of the death?, answer: non-combat related causes," | question: what Dawson's father says?, answer: "I just can't get it together with that. I had never heard that before. 'Non-hostile' in a war zone?"