Make this shorter and more concise but using the same words: . The defendant in this case, Robert Williams, shot and killed the ex-boyfriend of a woman he had just begun to date. On the night of the shooting, Mr. Williams had been invited to the apartment of Victoria Kennedy, who, unbeknownst to him, had just broken up with Mr. Mason, the victim, the night before. Mr. Mason showed up at the apartment and found Mr. Williams in the home naked with his ex-girlfriend. Prior to Ms. Kennedy opening the door for Mr. Mason, she mentioned to Mr. Williams that Mr. Mason would kill her, meaning he would kill her if he found her with another man. From the bedroom, Mr. Williams could hear Mr. Mason yelling at Ms. Kennedy. Ms. Kennedy managed to get him out of the house when, moments later, Mr. Mason came onto the balcony and, using a key, gained access to the residence. Mr. Williams, who was still scrambling to find his clothing and personal items to leave, could not find a light switch in the bedroom. He could only see the silhouette of Mr. Mason, who appeared to be much larger than him. This is when Mr. Williams decided to pick up the firearm he brought with him, which he possessed legally in his home state of Indiana. As Mr. Mason approached Mr. Williams in the bedroom, the defendant noticed he had a dark object in his hand. Mr. Williams fired nine shots toward Mr. Mason in rapid succession as he made his way out of the apartment