UVALDE, Texas—It was 11:28 a.m. when the Ford pickup slammed into a ditch behind behind the low-slung Texas school and the driver jumped out carrying an AR-15-style rifle.
Twelve minutes after that, authorities say, 18-year-old Salvador Ramos was in the hallways of Robb Elementary School. Soon he entered a fourth-grade classroom. And there, he killed 19 schoolchildren and two teachers in a still-unexplained spasm of violence.
