Update to the Two Students - Now the Second Student is Dead, and a Third Victim is Identified

The update from the STrib is here, the shooter is identified as the male student, who died of his injuries which were self-inflicted.. 

The third victim? Their 7 month old daughter.  While it is not specified, she may very well have been in the home at the time of the shooting, a murder-suicide.

The teens were living at the home, just west of Amor, with Cox's parents.
Sheriff Brian Schleueter said Cox shot Belmonte and used the same gun to kill himself. Two semiautomatic handguns were recovered from the scene, the Sheriff's Office said.

Cox's Facebook page includes "suicidesytem" as part of its web address and lists 1960s mass killer Charles Manson as among "people who inspire" him.

The Forum of Fargo and other news reports said that he and Belmonte are survived by a 7-month-old daughter.

My emphasis added.  I wonder if those two semiautomatic handguns were for home protection?

So, just how safe was that, really, as it turns out?