In the pre-dawn hours of January 19, 2013, a South Valley, New Mexico family was massacred. Gregory Greg Griego, 51, a former pastor and chaplain for the Albuquerque Fire Department, was shot and killed after returning home from an overnight shift at a homeless shelter. Earlier that night his 15-year-old son, Nehemiah, used a .22 caliber rifle to shoot his mother, Sarah Griego, as she slept, and then killed three younger siblings: Zephaniah, 9; Jael, 5; and Angelina, 2. The rifles used belonged to Gregory and were stored in the family closet.

After the killings Nehemiah loaded the weapons into the family van and contacted a 12-year-old girlfriend, later meeting her at Calvary Albuquerque, the church where his father had served. He initially told people the family had died in a car accident, then confessed; a church official who was a retired homicide detective returned to the home with Nehemiah, found Gregory’s body and called 911. Nehemiah was arrested and charged; he told investigators he’d been having anger issues and homicidal and suicidal thoughts.

What details about the family’s life or the days leading up to January 19 might help explain how this happened?