Investigators work at the scene of a mass shooting at the First Baptist Church in Sutherland Springs, Texas, on Sunday.

Carrie Matula embraces a woman after a fatal shooting at the First Baptist Church in Sutherland Springs, Texas, on Sunday. Matula said she heard the shooting from the gas station where she works a block away.

People hug outside Connally Memorial Medical Center in Floresville, Texas. Medical center spokeswoman Megan Posey declined to say how many patients were being treated at the hospital, but said the number was less than a dozen.

A woman prays with a man after a fatal shooting at the First Baptist Church in Sutherland Springs, Texas, on Sunday.

Mona Rodriguez holds her 12-year-old son, J. Anthony Hernandez, during a candlelight vigil for the victims of a fatal shooting Sunday in Sutherland Springs, Texas.

Lisa Cavazos speaks with Texas Gov. Greg Abbott during a candlelight vigil held for the victims of a fatal shooting at the First Baptist Church of Sutherland Springs, Sunday.

The gunman who killed 26 people in Texas Sunday had been court-martialed and discharged from the Air Force. Among his victims was a pregnant woman and three children.

Law enforcement officials allow a vehicle to pass as they work at the scene of a shooting at the First Baptist Church. The 26 dead ranged in age from 5 to 72 years old.

Mourners participate in a candlelight vigil held for the victims of a fatal shooting at the First Baptist Church of Sutherland Springs.

Community members come together for a candlelight vigil after a man opened fire inside the First Baptist Church in Sutherland Springs, Texas, on Sunday.