So was his end game suicide by Cop?
Still, WHY his sister?
JMO, from the sercurity video it wasn't suicide by cop. The video shows the cop coming out on a drive,path at the end of the bar patio. Bullets are flying so he steps back behind the cover of the building. The killer then comes running down to the end of the patio chasing victims who are running away. Shooter rapidly turns right down the path where the cop was standing. He accidentally ran right around the corner to where the officer was waiting.