SDI offers the following programs designed to help you reach your goals, no matter where you are in your career. We welcome students from all stages of life, from recent high school graduates to military veterans. SDI equips all students with the skills they need to pursue a career in firearms technology. - Associate of Science in Firearms Technology - Certificate in Firearms Technology - Gunsmithing - Certificate in Firearms Technology - Handgun Specialist | Sonoran Desert Institute (SDI)