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![Thin Blue Lifeline : Verbal de-Escalation of Mentally Ill and Emotionally Disturbed People - a Comprehensive Guidebook for Law Enforcement Officers [Hardcover]](/itemImage/2/7/6/5/2_6687362.jpg "Thin Blue Lifeline : Verbal de-Escalation of Mentally Ill and Emotionally Disturbed People - a Comprehensive Guidebook for Law Enforcement Officers [Hardcover]")