Crime Scene (Power Point)

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Collecting BloodSamplesLiquid blood on a person1. Absorb suspected liquid blood onto a cleancotton cloth or swab.2. Leave a portion of the cloth of swab unstainedas a control.3. Air-dry the cloth or swab and pack in cleanpaper or an envelope with sealed corners.4. Do not use plastic containers.
Dried blood on aperson1. Absorb suspected driedblood onto a clean cotton cloth,or swab, moistened withdistilled water.2. Leave a portion of the clothor swab unstained as a control.3. Air-dry the cloth or swab andpack in clean paper or anenvelope with sealed corners.4. Do not store in plasticcontainers.
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The student will be able to summari
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8. Do not permit personnel to begin
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Communication, between the search p
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Determining the search method and a
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Since all crime scenes are unique i
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Strip or Line search. This method,
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Circular (spiral or concentric) sea
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Elevation Zone Search
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Some investigative tools and equipm
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Bloodstain PatternDocumentationABFO
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Trace Evidence CollectionAcetate sh
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ImpressionBowls/mixing containers.B
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Guideline for conducting a crime sc
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Methods of conducting a preliminary
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Field notes
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Protection of a crime scene.Protect
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Once evidence has been located, rem
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Conducting a final survey of the cr
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After the Search is complete, but p
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The importance for maintaining a ca
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The importance for conducting a fol
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Sketching and Photographing
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The main reasons for using crime sc
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The crime scene sketch should inclu
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The finished sketch.a) A finished s
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D) If requested, dimensions and des
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The schematic sketch:Used to repres
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Prevalent sketch:Sketch of the gene
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Compass direction.A standard arrow
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Suitable scales for use in police w
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TitleThe title should contain data
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Rectangular CoordinatesObjects are
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Reasons for taking Crime Scene Phot
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Photographs should be taken prior t
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Photographic Log1. It is a complete
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Mid-range photographs.a. Usually ta
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3. Centering on the results of the
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General standards used to review th
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The relationship between crime scen
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10 feet from base point 1 to base p
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The methods of classifying fingerpr
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The only patterns usually used to d
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Methods for identifyingFINGERPRINTS
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Types of PatternsFingerprints may b
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Identification points1. Bifurcation
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Latent Impressions (patent fingerpr
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The quality of latent impressions c
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Protect all areas, as best you can,
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Dusting for Latent ImpressionsFor h
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Powder should be used sparingly.Dis
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Use lifting tape large enough to co
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Ninhydrin.This chemical acts as a d
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This solution reacts with sodium ch
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Print development by this method de
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In order Three to speed to four up
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THE AFIS SYSTEMAFIS technology uses
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First things first, make sure the p
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Recommended equipment:Inking plateC
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In taking rolled impressions, the s
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Closely observe the crime scene. It
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Be sure that you’ll be able to an
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Marking EvidenceAnyone who handles
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Each different itemshould be packag
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An unfortunate side affect of these
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LiquidsMost often encountered in ar
Page 145 and 146: Flammable liquids and accelerants e
Page 147 and 148: The firearm should behandled carefu
Page 149 and 150: Note the following conditions:Physi
Page 151 and 152: Avoid the front of revolver cylinde
Page 153 and 154: Marking firearms.a. Don't deface a
Page 155 and 156: When cylinders must be unloaded(1)
Page 157 and 158: Projectile evidence (expended bulle
Page 159 and 160: Collection and preservation of glas
Page 161 and 162: Paint evidence.1. Collection and pr
Page 163 and 164: Suspects clothing1. A suspect’s c
Page 165 and 166: Most illicit drugs come in one of s
Page 167 and 168: Stainsa. Blood is the stain found m
Page 169 and 170: 3. Prints, such as latent prints an
Page 171 and 172: Precautions that should be taken to
Page 173 and 174: There are certain precautions, whic
Page 175 and 176: In the case of an accidental wound,
Page 177 and 178: Evidence stained with blood or body
Page 179 and 180: Even after evidence has been proper
Page 181 and 182: Safety precautions, safe work pract
Page 183 and 184: Hazardous materials transportation.
Page 185 and 186: ExplosivesBlasting caps, unstableex
Page 187 and 188: Preserving evidence during foul wea
Page 189 and 190: DNA (deoxyribonucleic acid)- the mo
Page 191 and 192: Important considerations of DNA eva
Page 193 and 194: Blood examinations cannot determine
Page 195: Methods of collecting known bloodsa
Page 199 and 200: BloodstainsAir-dry wet bloodstained
Page 201 and 202: When possible, cut a large sample o
Page 203 and 204: Blood examination request letterA b
Page 205 and 206: Saliva on cigarette butts1. Pick up
Page 207 and 208: Saliva on envelopes and stamps1. Pi
Page 209 and 210: Dry saliva- or urine-stained object
Page 211 and 212: Semen stainsLiquid semen1. Absorb s
Page 213 and 214: Semen stains from immovable object1
Page 215 and 216: 2. Refrigerate samples and submit t
Page 217 and 218: Hairs in the hand of the victims1.
Page 219 and 220: Methods of collecting Tissue, Bone,
Page 221 and 222: Place tissue samples in a clean, ai
Page 223 and 224: Socks1. Socks worn by a homicide vi
Page 225 and 226: WeaponsWeapons recovered at a crime
Page 227 and 228: Considerations of documenting, coll
Page 229 and 230: G. It may be necessary to use a var
Page 231 and 232: Search the burglarized structure to
Page 233 and 234: Checklist for burglary investigatio
Page 235 and 236: A. Response to a robbery crime scen
Page 237 and 238: Checklist for robbery and aggravate
Page 239 and 240: Investigating an alleged physical a
Page 241 and 242: Checklist for an assault, or aggrav
Page 243 and 244: 3. Note and document the victim's c
Page 245 and 246: Medical treatment (specimens)a. Adv
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(3) Hair from the victim. Request a
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Crime Scene (Power Point)

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