Coleman Bean served two tours of duty for the US Military in Iraq. But what he witnessed there haunted him. He shot himself at home in 2008. He was 25.
Coleman Bean's mother, Linda Bean said: "I was willing to overlook changes in behaviour... It's hard to know you didn't do what you should have done... That's hard to live with."
Two mothers whose sons committed suicide a week apart last month are campaigning to raise awareness of their suicide.
In the United States, suicides in the military have claimed more lives than the fighting.
Soldier Liam Smith suffers terrible mental trauma. He believes the Taliban are in his wardrobe. He's even tried to carve off his face.