suddenly brett heard shots. he ran upstairs and was greeted at the top of the stairs by brian pulling a gun on him and ordered him to the safe. as he walked by the office he saw his wife s legs. he surmised then she had been shot. he was taken to this alcove area and on the way he realized he had a gun hidden on the safe in that area and he made a decision as he knelt at gun point to grab the gun and try to get to him before he shot him basically. so he turned around and caught brian off guard. that s how he explained it. by shooting him. he ran to check on his wife and realized that she was dead or dying and then he went and called 911. police recovered two guns from the scene.