Caleb Downing 07.05.20 Dave Propri SDI is really worth the time and worth the investment. I don’t know where you’d get this caliber of education and knowledge in the package you can get it in at SDI. RELATED STORIES Firearms Tech Lever Gun Renaissance read more Military and History Medal of Honor Spotlight: SSG. Hiroshi Miyamura read more Student Life SDI Field Study Experience Was "Amazing" read more