If you’re an instructor, training officer, or serious shooter looking to break through plateaus and truly understand what’s behind each miss or malfunction, this course is for you. The Diagnostic Pistol Instructor (DPI) course, taught by nationally recognized instructor Chris Cerino, is built specifically for those who are responsible for fixing shooters—including themselves. This isn’t just about shooting well; it’s about knowing why a shot goes where it does and how to correct it with confidence and clarity. This course bridges the gap between skilled shooter and skilled instructor. It’s where pistol marksmanship becomes repeatable, explainable, and transferable.