These people were idiots. So many things could have gone differently. Escalating an argument to that level over snow removal is retarded. It's frozen water it'll melt lol.
The husband made zero actions to protect his wife. Even after being shot he ran away crying that HE'D been shot. No mention of the wifey or any attempt to persuade her to try and save herself.
He acted like the tough guy and died pathetically. If he had enough left to run down the driveway he could've attacked the gunman in an attempt to save their lives. Close range shooter was within fighting distance. Better to die shot / fighting for the gun and your life then to turn and run leaving the wifey to fend for herself.