BOSTON (WBZ) — Boston native John “Doomsday” Howard made his name as a UFC fighter. Now, he’s giving back to his community by teaching women self-defense and helping children learn martial arts.

After a close female friend of ASU alumnus Dan Kessler was attacked last summer, Kessler promised himself to teach women how to defend themselves. Kessler, who has trained for five years with ASU's ...