There are few outlines of the mass shooter life as he was an isolated an agressive person.
Ian David Long, 28, was a troubled machine-gunner who served seven-months in the military deployment in Afghanistan in 2011.
Long has always desired to join the Marines since he was in high school, where he is remembered as a chiling person who makes people "fear for themselves" around him. The gunman enlisted a few months after high school graduation in 2008. Two weeks before he returned from his deployment in Afghanistan in 2011, he separated from his wife and possibly suffered from post-traumatic stress desorder, but it isn't confirmed since he wasn't enrolled in health care. In 2013, he left the service and started taking classes. A neighbor recall him"you never knew when he was going to go off."