Sgt. Kimberley Munley put a quick end to the shooting at Fort Hood in Texas yesterday, gunning down suspected shooter Major Nidal Malik Hasan in spite of her own injuries. Friends of the police officer are saying that this kind of bravery is standard for Munley. "She was born and bred to be a police officer. If you were ever to be in a fight, she'd be the first person to stand up next to you and back you up,” said a longtime friend of Munley’s. “She's a tough cookie." Munley arrived within four minutes of being called in to respond to the shooting. She fired at Hasan from close range in what officials are calling “an amazing and an aggressive performance,” which friends credit to her training as a former member of the armed services. Munley is in stable condition and spent the rest of Thursday checking in with family and fellow police officers. She is married with two daughters. "I live a good life....a hard one, but I go to sleep peacefully @ night knowing that I may have made a difference in someone's life," Munley wrote on her Twitter page.