PHOENIX - A family is mourning and looking for answers in a soldier's death.

The family of Pvt. Julian Diaz says they were told he was killed in a training accident involving a vehicle at the Fort Irwin National Training Center in California.

Diaz was the youngest of six brothers raised by their single mother, Fidelia Diaz.

“There’s nothing that will bring back my baby,” said Fidelia as she broke down in tears.

Army officials say circumstance surrounding the Tolleson teen’s death are under investigation.

“Sometimes I want to tell all young men to not enlist in the Army,” said Fidelia as she continued to express mixed feelings about her youngest son’s death.

Frustration runs deep for the Diaz family as they search and wait for more answers in regard the Julian’s death.

“You would expect more from the United States, I mean, have a better training than just putting people in some kind of training and getting killed…,” said Daniel Diaz, one of Julian’s older brothers.

Julian’s family says he wanted to make a difference and was motivated to do great things. His Facebook page says he graduated from Tolleson Union High school. Julian was an infantryman for the U.S. Army. He enlisted in 2017 and served in the 1st Battalion, 23rd Infantry Regiment, 1-2 Stryker Brigade Combat Team, 7th Infantry Division, since December 2017. He was awarded the National Defense and Army Service Ribbons, respectively.