Ii would take a significantly more amount of commitment and intestinal fortitude to do this with a knife. This was not a physically easy task to see through to completion. It would appear that he had some how gained prior knowledge of the home and occupants, as others have rightly mentioned. Having dealt with uncooperative patients for thirty plus years (a small percentage thank the Lord), whom we were there to aid, I can’t get my mind around the chaos that took place in that home when someone is trying to kill four people. You can have a patient that is moderately sedated (as would be the case with alcohol), and even with the slightest stimulation, their fight or flight system can overcome what you have given them as if it was nothing. Without a doubt, once adrenaline kicked in, these young ladies had the ability to make this difficult, not to mention the young man. If this was a first time kill I would be amazed, because this was a difficult, heinous task. Not one that in my opinion could be accomplished by a first time offender.