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Good morning.

Here’s what you need to know:

Mass shooting in Texas.

• A gunman with a military-style rifle killed at least 26 people and wounded at least 20 others during a service at a Baptist church in Sutherland Springs, Tex., on Sunday.

It was the deadliest mass shooting in the state’s history, and President Trump called it a “mental health problem at the highest level.”

Among the things we know so far: The suspect, Devin Patrick Kelley, 26, who died soon after the massacre, had served in the Air Force but was court-martialed in 2012 on charges of assaulting his wife and child.

We spoke to grieving residents of Sutherland Springs, described as “a one-blinking-light town,” and have maps of how the rampage unfolded.