Because a mass fatality human identification response requires a surge in personnel, proper training will be critical. A “training the trainer” approach is commonly used when there is a need to train large numbers of personnel. This approach to developing capabilities is twofold. First, trainers must master the knowledge and skills taught in the preceding chapters. Second, trainers must deliver effective training courses to meet the learning needs of the individuals who will play key roles in forensic DNA identification efforts. The trainer should focus on the knowledge and skills needed for delivery of effective training-planning the “right” training and delivering it in the “right” way. The information provided in this chapter will help the trainers prepare and conduct trainings. Key steps in the preparation, delivery, and evaluation of the training sessions are addressed.