Forensic evidence can often mean the difference between guilty and innocent in a court case. We went inside the lab at Bagram Airfield, where the 19th Military Police Battalion, Criminal Investigation Division is training 11 Afghan investigators from the Ministry of Interior's Criminal Technique Lab. Includes sound bites from Tabitha Bullock, DNA Instructor, Abdul Ahad Saifi, DNA Student, and Ghulom Easa, Firearms Student. Produced by Lance Cpl. Clayton Rogers.