Shane Tamura, the gunman responsible for a shooting at the NFL headquarters in New York City, has been diagnosed with chronic traumatic encephalopathy (CTE), a brain disease commonly associated with repetitive head injuries in contact sports. The medical examiner found that Tamura exhibited low-stage CTE, which he reportedly cited as a contributing factor to his mental health issues and his actions during the attack. The findings have raised concerns about the impact of CTE on individuals with a history of playing football and other contact sports, linking the disease to behavioral changes and mental health struggles. The investigation into the shooting, which resulted in the deaths of four people, continues as experts discuss the implications of CTE in relation to the responsibilities of sporting organizations like the NFL.