you left off "hole"
Why? The woman was a sister to one of them. Murder suicides (as it is being called) are most often committed by men against a lover or spouse. And you are now allowed to openly flaunt your homosexuality in the military.
So, we are left with two possibilities; one of the men was dating the sister and then killed everyone or one of the men was dating one of the other men and then killed everyone.
Am I so for off base in the realm of possibilities?