Park ranger shooting suspect was mentally unstable gun owner with a history of domestic violence. [View all]

[RandySF]

Barnes, who was believed to be carrying a cache of weapons, has had a troubled transition to civilian life, with accusations he suffers post-traumatic stress disorder and is suicidal.

He was involved in a custody dispute in July, during which his toddler daughter's mother sought a temporary restraining order against him, according to court documents.

The woman told authorities he was suicidal and possibly suffered from post-traumatic stress disorder after deploying to Iraq in 2007-2008, and had once sent her a text message saying "I want to die."

She alleged that he gets easily irritated, angry and depressed and keeps an arsenal of weapons in his home. She wrote that she feared for the child's safety. Undated photos provided by police showed a shirtless, tattooed Barnes brandishing two large weapons.

http://www.huffingtonpost.com/2012/01/02/benjamin-colton-barnes-_n_1179815.html