NEW YORK (AP) — The Dallas police chief who was praised for his response to last summer's shootings of five law enforcement officers is working on a memoir.

Ballantine Books announced Thursday that it had a deal with David O. Brown for a "deeply revealing" book, currently untitled, to come out next year. Brown, who retired in October, received national attention after a sniper killed five officers at a July protest. According to Ballantine, the book will reflect his "measured, motivating" approach to his work.

Brown said in a statement that he hoped to emphasize the importance of trust and "other philosophies" he had developed over the years. Earlier this week, ABC News announced that he would join the network in January as a commentator on race, policing and other subjects.