HATTIESBURG, Miss. -- A U.S. Army official said that a Wisconsin soldier whose death shortly after he arrived in Iraq raised questions about the adequacy of his preparation was provided with all the tools he needed.

Cool. John Hadjis is commander of the training unit in south Mississippi where Spc. Stephen Castner's unit trained. Hadjis led a media tour of Camp Shelby on Wednesday.

Hadjis said that all of the more than 20,000 soldiers who have trained there have undergone a rigorous regimen. He said that it includes "theater immersion," which simulates a foreign battlefield, and extensive training on how to detect and react to deadly improvised explosive devices.

It was one of those devices that killed the 27-year-old Castner, of Cedarburg, on July 24, just days after his unit's deployment in Iraq. He served with the Wisconsin National Guard's Milwaukee-based 1st Battalion, 121st Field Artillery Regiment, which had its mission changed from artillery to convoy security when it was called up.

Castner's father said that there were problems with the training, including a shortage of vehicles, and he also contends the armored Humvees used by the unit aren't sufficient protection for the troops. Castner's father said that he's also received communications from families of other soldiers who share his concerns about inadequate training.

Military officials said that they are looking into his complaints.

Earlier this month, a Wisconsin National Guard spokesman said that soldiers who might be questioned about concerns over training procedures have been instructed to cooperate fully with investigators.

Castner had complained to Gov. Jim Doyle and U.S. Rep. Jim Sensenbrenner that his son Stephen received inadequate training before he was killed by a roadside bomb last month.