It's funny how so many folks have so many opinions while being so ill-informed! I personally know nothing outside of what I've read in this thread, but it's enough to see that obviously there is a lot more to this story. Folks don't kill their husbands over one threat - unless the husband really meant it. I for one, wasn't in the home that night, so I can't say. Can anyone here? If so, spill the beans!
Has the husband/wife been over in the Gulf in support of OIF, or maybe OEF? Do either of them suffer from PTSD? Any mental trauma related to combat? If they're sergeants in the Guard, that means they've been in a few years - probably going on 4 to 6. Possibly multiple rotations?
Even if no combat - there are plenty of ways to strike a person w/o leaving marks, and military-trained individuals are trained to maintain composure under duress, and conceal emotions. This training is especially emphasized in peacekeeping train-ups as you must maintain a relationship with the indigenous population. It's not terribly difficult to transfer that skill into civilian life. Does anyone know the wife's MOS? Civilian Affairs, maybe PsyOps? Wouldn't that be a kicker. Or, she could be a cook - point is, you don't know.
So - who's to say what happened? Just because you know someone at work, the nicest person, polite, respectful - doesn't go home and kill the neighbor's pets for giggles. It's not the "good ol' days" where folks are always as they seem. It's "ok" to be messed up now, didn't you catch the news?
In closing - I think it's best to reserve judgment until all the facts are in. I hope the kids are well cared for in this time of need, and that they stay that way. I also hope the wife gets a fair shakedown - guilty or not.