The police officer who ended the Fort Hood massacre by shooting the suspect is known as the enforcer on her street, a "tough woman" who patrolled her neighborhood and once stopped burglars at her house.

"If you come in, I'm going to shoot," Kimberly Munley told the would-be intruders last year.

It was Munley who arrived quickly Thursday at the scene of the worst massacre at an Army base in U.S. history, where 13 people were killed. She confronted the alleged gunman, Maj. Nidal Malik Hasan, and shot him four times. Munley was wounded in the exchange.

That's just like her, friends and family say. "I just felt more protected knowing she was on my street," neighbor Erin Houston said.

Munley, 34, is being treated for her wounds. Her father, former Carolina Beach, North Carolina, Mayor Dennis Barbour, said his daughter is doing well.

"Her efforts were superb," said Col. Steven Braverman, the base hospital commander.

Lt. Gen. Bob Cone, Fort Hood's commanding general, described Munley as a "trained, active first responder" who acted quickly after she "just happened to encounter the gunman."

"Really a pretty amazing and aggressive performance by this police officer," he said.

Cone said Munley and her partner responded "very quickly" to the scene -- reportedly in about three minutes.