Six weeks before his deadly rampage at Trolley Square mall, Sulejman Talovic proudly showed three young relatives the 12-gauge shotgun, .38-caliber revolver and black backpack of ammunition he had collected. None of the three teenagers, skeptical of Talovic's claim that he was "hustling" for a local gang, thought to alert Talovic's parents or police. Talovic had invited the teens, all distant cousins, to his family's west Salt Lake City home on Jan. 1, and the four watched MTV in the basement. .......