A local community is mourning following the death of a 15-year-old boy, who passed away after falling 50 feet from a structure at Gas Works Park on July 10. The victim, named as Mattheis Johnson by Ballard High School (BHS) administration, was attending what was described as a "pop-up concert" at the park when he fell. "It was horrible," one witness told KOMO News, who said she and her friends saw the teenager plunge from a "staircase" on one of the park's structures around 10:30 p.m. He was tak