This email concerns the practices and effectiveness of Tiger Teams, which appear to be FBI interrogation units. It mentions that interviews of detainees can range from 1 to 6.5 hours, and emphasizes patience and continuity in interrogation approaches. The response email from the NSA Operational Training United, Counterintelligence Division, poses a variety of questions about the teams and their interrogation strategies. The next email in the chain lists three documents attached.