A 16-year-old forced his way into Silver Rail Elementary School in Bend, Oregon, on Thursday at approximately 1pm by shooting through locked doors. He killed three children — aged five, eight, and 11 — and a teacher before being shot dead by an armed bystander who pursued him into the building. A seven-year-old child and a 54-year-old teacher were hospitalized with critical injuries. The timeline was brutally compressed. Bend police received the first 911 call at 12:59pm from a person in a vehicle who reported being shot at with a long gun. By 1:01pm the school was in lockdown; by 1:02pm officers were on scene. But the bystander had already engaged and killed the shooter before law enforcement entered the building. The Associated Press, citing an anonymous law enforcement source, reported the weapon was a pump-action shotgun purchased by the shooter's mother. Multiple news outlets including NBC News, the Washington Post, and the New York Times identified the shooter as John J. Griffin II, a 16-year-old Bend resident, citing law enforcement sources. Authorities have not formally confirmed the identification or released names of the victims as of Friday morning. Bend police chief Mike Krantz described the investigation as long-term and said police would maintain a large presence at the school for days. The shooting fits a documented and accelerating pattern. The deadliest school attack since the September 2024 mass killing at Apalachee High School in Georgia — where a 14-year-old killed two teachers and two students — it arrives amid growing evidence of teenage shooters radicalized through nihilistic online communities. In May, two teenagers who met online shot and killed three people at a San Diego mosque before killing themselves, explicitly naming prior mass shooters as inspiration in their manifesto. Bend, a city of roughly 100,000, held a candlelit vigil Thursday night in Drake Park. Governor Tina Kotek and Mayor Melanie Kebler attended. All schools in Bend and neighboring La Pine were closed Friday. Memorials with flowers, balloons, and stuffed animals appeared around the school, which sits in a densely packed neighborhood of newly built homes. Superintendent Steven Cook called the attack a "senseless tragedy." The structural question this event forces is not new but remains unanswered: what institutional mechanisms exist to intercept radicalized teenagers before they act? School lockdown protocols worked as designed — the building locked down within two minutes. Law enforcement arrived within three minutes. The attack was over before any of it mattered. The intervention that stopped further killing came from an armed civilian who happened to be present. That is not a system; it is luck. FBI Director Kash Patel confirmed the bureau's local office was assisting local law enforcement. Education Secretary Linda McMahon expressed condolences. No motive has been established. The investigation into the shooter's background, online activity, and how a 16-year-old obtained a shotgun purchased by his mother is ongoing.