2Consensual Encounter 9 -- Nonverbal Cues 32 -- Verbal Cues 33 -- Vocabulary and Phrasing 34 -- Related United States Supreme Court Case Law Supporting Consensual Encounters 42 -- 3 Knock and Talk Technique 53 -- What is a Knock and Talk? 54 -- Use of Tip Programs and Processing 57 -- Reasons to Use a Knock and Talk 58 -- Why Do People Consent? 59 -- Knock and Talk as an Investigative Technique 60 -- Use of a Drug Canine Team 67 -- Determination in Obtaining Consent 67 -- Consensual Search Inventory 69 -- 4 Use of the Drug Canine in Drug Interdiction 73 -- Cost to Police Agency 74 -- Acquiring a Drug Dog 75 -- Selection of Dog Handlers 77 -- Training and Training Records 78 -- Standard Operating Procedures 79 -- Use of Training Drugs 80 -- Other Factors 82 -- Currency Examinations 83 -- Person Examinations and Passive Alert Dogs 84 -- Courtroom Testimony 85 -- 5 Hotel/Motel Interdiction 91 -- What is Hotel/Motel Interdiction? 91 -- Benefits to the Hotel/Motel Community 92 -- How Do We Get Started? 93 -- Selecting Hotels to Implement the Program 95 -- Contacting Hotel Management 96 -- Training of Hotel Management and Staff 102 -- Implementing the Program 104 -- Investigative Methodologies 107 -- Indicators of Possible Criminal Activity 116 -- Areas of Concealment 127 -- Investigative Techniques 130 -- 6 Airport Investigations 135 -- Airport Police 139 -- Educating Your "Eyes and Ears" 143 -- Equipment and Material Needed 144 -- Characteristics or Indicators 145 -- Surveillance and Encounter Locations 148 -- Countersurveillance Activity 153 -- Approach and Encounter 156 -- Related Airport Case Law 156 -- 7 Storage Unit Investigations 159 -- What is Storage Facility Interdiction? 160 -- How Do We Get Started? 161 -- Implementation of the Program 162 -- Storage Facility Investigations 168 -- Drug Canine Capabilities 173 -- 8 Train Interdiction 177 -- Officer Safety 178 -- Luggage 185 -- Amtrak's Computer System 190 -- Amtrak Personnel 191 -- Consensual Encounter on a Train 198 -- Conducting Encounters on the Train 202 -- 9 Commercial Bus Interdiction 215 -- Most Recent United States Supreme Court Decision 216 -- Florida v. Bostick, Cite as 111 S. Ct. 2382 (1991) 217 -- Establishing a Commercial Bus Interdiction Detail 218 -- Review of Ticketing Information and System 222 -- Encounters Conducted on the Bus 224 -- Encounters Conducted inside the Commercial Bus Terminal 233 -- Use of a Narcotic Detection Canine 233 -- 10 Drug Parcel Systems 239 -- Drug Parcel Systems 239 -- What is Drug Parcel Interdiction? 239 -- How Do We Get Started? 240 -- Indicators of Possible Criminal Activity 245 -- Random Examinations of Parcels 247 -- Controlled Deliveries 249 -- U.S. Postal Inspection Service Role 254 -- U.S. Customs Service 255 -- Freight Companies 255 -- Other Common Practices 256 -- 11 Rental Vehicle Investigations 263 -- Purpose of a Rental Vehicle Program 264 -- Contacting Management 264 -- Indicators of Possible Criminal Activity 267 -- Investigative Techniques 273 -- Canine Team 277 -- 12 Currency Seizures 281 -- Establishing Ownership 291 -- Origin of the Currency 293 -- Purpose of the Currency 294 -- Packaging and Transportation 294 -- Use of a Canine 295 -- Decision to Seize the Currency 295 -- Have We Forgotten Anything? 295 -- 13 Report Writing and Courtroom Testimony 301 -- Report Writing 303 -- Preparation for Court and Courtroom Testimony 305 -- Observation of a Trial 310 -- Pretrial Interview 311 -- Testimony Preparation 313 -- Your Professionalism 313 -- Testifying 313 -- 14 Role of the Interdiction Supervisor 317 -- Instituting the Interdiction Program 317 -- Administrative Matters 320 -- Training 321 -- Operational Briefings 321 -- Controlled Deliveries 322 -- Preparing for the Execution of Search Warrants 323.