OIG’s review of the videotapes revealed that the waterboard technique employed at was different from the technique as described in the DoJ opinion and used in the SERE training. The difference was in the manner in which the detainee’s breathing was obstructed. At the SERE School and in the DoJ opinion, the subject’s airflow is disrupted by the firm application of a damp cloth over the air passages; the interrogator applies a small amount of water to the cloth in a controlled manner. By contest, the Agency interrogator continuously applied large volumes of water to a cloth that covered the detainee’s mouth and nose. One of the psychologists/interrogators acknowledged that the Agency’s use of the technique differed from that used in SERE training and explained that the Agency’s technique is different because it is “for real” and is more poignant and convincing.