Aleppo, Syria (AP) — Prior to joining the Tawheed Brigade in opposition to the Syrian government, Anwar Addat was a computer technician who never gave much thought to politics or religion. That was before a barrel bomb delivered by a government helicopter ignited a fire that killed his wife and two children. These days he goes nowhere without his AK-47 and body armor, and looks every bit the insurgent warrior he has reluctantly become.