During the screening and/or background investigation process, you will be asked questions regarding any felony criminal convictions, the use of illegal drugs and the use of non-prescribed controlled substances including any experimentation, possession, sale, receipt, manufacture, cultivation, production, transfer, shipping, trafficking, or distribution of controlled substances. Criminal Investigator Training Program: Criminal Investigators must complete and pass an initial course of basic training, specifically the Criminal Investigator Training Program (CITP) and the ATF Special Agent Basic Training (SABT) at the Federal Law Enforcement Training Center in Glynco, Georgia.