We know how this goes. A gunman walked into Silver Rail Elementary School in Bend, Oregon, on Thursday afternoon and opened fire. Within minutes he was dead inside the building, but so were several others, including children. Police have confirmed at least two people were hospitalized. The rest of what we know comes from law enforcement sources speaking anonymously, and it doesn’t yet line up.

The timeline is brutally tight. Bend police communications manager Sheila Miller said dispatchers took a call at 12:59 p.m. about a shot fired into a car outside the school. Within a minute, 911 calls came in reporting a shooter inside. Officers arrived less than five minutes later and the suspect was down in just seconds.

Police said the shooter may have been killed by a bystander rather than an officer. Sources told CBS News the gunman was 16 years old and that a good Samaritan killed him. His identity and motive haven’t been released.

Law enforcement sources told CBS News and Fox News that three children and one adult were killed. Police have not confirmed either figure. The K-5 school enrolled 459 students last year.

The FBI and ATF are assisting. All Bend-La Pine Schools are closed Friday. Expect the official count, the shooter’s name and the question of who stopped him to come in slowly over the next 48 hours—and expect the first versions to be wrong. What’s clear is this is just the latest in a familar scenario that’s unfolded across the education landscape, from elementary schools to college campuses, at high school sports games and in university lecture halls amid the crunch of studying for final exams.

Letters carrying an unknown white powder landed at state election offices and Senate mailrooms this week, and the FBI and U.S. Postal Inspection Service are now investigating a wave of suspicious mailings sent to offices nationwide. Testing so far has turned up no hazardous material. The timing isn’t random: It’s less than three weeks until the Nov. 3 midterms.

At least five Democratic senators were targeted—Chuck Schumer, Kirsten Gillibrand, Chris Murphy, Alex Padilla and Lisa Blunt Rochester—though most of the letters were intercepted before they reached anyone’s desk. The House sergeant at arms said no House members were known to be targeted. Election offices took the brunt of it. Officials in Louisiana, Oklahoma, Delaware, Ohio, Wisconsin, Pennsylvania, New Hampshire and Mississippi reported receiving or being the intended recipients of suspicious mail, and buildings in Louisiana and Oklahoma were evacuated, reports ABC News. How big is this? Nobody will say on the record. Law enforcement sources told reporters preliminary information suggests more than 100 letters may be circulating. Until the labs and the postal inspectors finish, the only confirmed facts are the evacuations, the clean test results and a calendar that keeps moving toward Election Day.

After nine years, potentially millions of dollars in deposits and not to mention considerable hype, the Tesla Roadster is finally ready to launch—which it did. The automaker on Thursday unveiled its second-generation sports car with a flourish of engineering prowess. Using SpaceX rocket technology, the angular sports car climbed a curved ramp and hurled itself to a controlled landing. Later, it leapt over five other Tesla vehicles while twisting in the air.

The Verge reports the event was less than 30 minutes and felt more like a stunt show than a product reveal. Indeed, there was no mention of price, trim levels, release date, or other such mundane details. Musk promised the hypercar would go into production in 2028, but after nearly a decade, who’s counting? The people were here to see a car fly, and that’s what Tesla gave them.

Some key details were missing, however. At the event, onlookers shouted to Musk, asking for a price tag, but their cries went unanswered. Musk also demurred when asked how it might be street legal. “Yeah, depends on your street, but it’ll be a viable car,” he said.