Few people understand loss better than David Brown, the Dallas police chief who stood before television cameras Friday morning and said, “We are heartbroken.”

Even before five police officers were killed Thursday at the site of a Black Lives Matter protest where seven other people were wounded, Brown had become all-too familiar with grief, pummeled by it again and again in his career and personal life.

Before this week, violence had already taken from him a former partner, a brother, a son.

“There are some people who would just shut down, and they would have others conducting the interviews,” said Keith Humphrey, the police chief of Norman, Okla. “But that is not David. He realized the community wants to hear from him. The nation wants to hear from him.”