Only hours after the ambush that killed five Dallas law enforcement officers, mental health experts began thinking ahead, searching for ways to ease the long-term effects of the attack on the men and women who patrol the nation's ninth-largest city. As she watched the July 7, 2016, assault unfold on the news, Dallas philanthropist Lyda Hill immediately thought of research she had funded to help returning combat veterans. Maybe it could help police too. A year later, Dallas officers are still grieving, but scores of them have received or are on track to receive specialized training in mindfulness" and other stress-management techniques that aim to teach police how to better understand and control their emotions, both on and off the job. "One of the most powerful things you can do is teach people that it's OK to be human," said Richard Goerling, a police lieutenant in Hillsboro, Oregon, who teaches the mindfulness training. Goerling, who has been a leader in mindfulness training for the last decade, said traditional stress management often does not work for police. "You aren't going to stop the stress, but you are able to change how you respond to it," he said. The training has been done on a smaller scale in Seattle; Madison, Wisconsin; Cambridge, Massachusetts; and smaller California departments, among others. It aims to help officers recalibrate their responses to emotions so when in stressful situations, they can respond instead of react, Goerling said.