RESPECT; Respond to scene and make it safe - Answer- -use preliminary detiails(cad 911 operator ect
use following
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time,location,crime,people,vehicles,number of first responders going to scene
take direct safest route
Upon arrival scan area remain alert
RESPECT: Emergency care for injured - Answer- request EMS
est. pathway to avoid evidence destroy
document any contact by EMS-DO NOT ATTEMPT TO REPOSITION
RESPECT: SEPARATE AND REMOVE PEOPLE - Answer- IMMEDIATELY SPARATE VICTIM AND SUSPECTS
SEPARATE victims form witness
identify an d separate witnes for intiviewiing, if witness needs to leave get there infor and schedule intview later
RESPECT: Protect the crime scene - Answer- est temp. perimeters
DO NOT touch or move or alter
keep food drinks out of scene
identify evidence do not touch
identify actual or potential sources of dna trae impression and finger prints
Protect the crime scene-conduct walk through - Answer- 1.identify legal standards for crime scenes
2.ue pathway
identify special equipment or clothing needed
4.identify the following
-entry exit
between suspect and victim
between suspect and evidence
between victim and evidence
identify perishable or fragile evidence that need to be processed first
what type of perimeter should you establish - Answer- Inner and outer
Inner Perimeter - Answer- Make at least. Twice the size of actual crime scene
Clearly make inner perimeter boundaries with line take
Only allow authorized investigators and crime scene personnel to the inner perimeter
Est. Signal entry and exit
Est crime scene log
Included the following in crime scene log - Answer- Date and time log began
Name of person entry and exit
Name and entry of person making entry
Entry date,time,and signature of person
Reason person made entry
Exit date,time,scene was clear
Outer perimeter - Answer- Identify outer perimeter boundaries with combination of emergency vehicles, police officers barriers
Used to store equipment and supplies. Create log of equiment,assets and supplies
Agency policy may permit designated area inside, for credentialed news media representative
Rough sketch - Answer- Begin during walk-through
Included the case number, date time of sketch,author,name,direction arrow, and the words NOT TO scale
Use legend
Include relevant measurement dimensions and distance between evidence e and crime scene
Photograph crime scene - Answer- Use agency owned and issues camera or video equiment
Do not use person cell phones
Use log
Leave in natural state
Take as many organically photos as needed
Begin with broad perspective and move inward taking overall image
-overal- landmarks, street signs, house number
-mid-range-perspective 5-10 ft
-close up , include-injuries,license plates,serial numbers,impression,locations of dna trace
Do not delete photographs
Video crime scene - Answer- Remove all personnel's from. Scene
Video entire crime scene
Keep video camera at eye level
Do not provide narration
Overall, midrange,close up
RESPECT: Evidence collection Types of evidence - Answer- Direct-directly lines a person to crime without the need of any additional evidence or inferences
Circumstantial evidence- relies on an inferences to connect a conclusion of fact
Physical evidence-is tangible and may be direct or circumstantial, includes objects or items seized at the crim scenes or during searches
Testimonial evidence-may be direct or circumstantial. Includes first-hand statements made by victim witness suspect or police
Exculpatory evidence-refers to evidence and or statements which tend to be clear, justify or excuse a defendant from alleged fault or guilt.
Best pratice for chain of custody includes - Answer- Date,times,location of evidences
Name of officer who seized evidece
Alll dares and times evidence were received
Name of all people who came in contact with evidence\
Full description of evidence following
Owners name
Case number
Make,model,serial numbers
Color sizes weights and any unique characteristic
Evidence packaging and storeage - Answer- Prioritize items for collection
Collect the most fragile evidence first and the least fragile last
Standard precautions
-gloves face mask, shoe protectors,full body coveralls
Types of physical evidence - Answer- Direct or circumstantial
Examples:
Drugs,money,clothing,weapons documents, digital files,fingerprints and impression,DNA , trace evidence
Trace evidence - Answer- Transferred from one surface to another during physical contact
Include: soil,mineral,gunshot residue,human and animal hair, textile, wood glasss paint fibers
Identify and protect trace evidence until excpert Asia stance arriavals
DNA evidence - Answer- Includes, human hair,tissue,bone,teeth,blood,saliva,semen or other bodily fluids
Best practice for collecting DNA - Answer- Identify and protect DNA evidence
Use protective equiment
Change gloves between every sample
Packaged DNA separately
Attach bio-hazard
Fingerprint evidence three type - Answer- Plastic-found in wet-paint
Patent-seen with naked eye
Latent-can not be seen wit naked eye
Identify and protect fingerprints evidence until expert assistance arrvives
Impression evidecen - Answer- Created when one object presses against another with enough force to leave matching print
Can be found in following area;
Snow
Bloo\
Dirt/sand
Human skin
Systematic search - Answer- Determine by circumstances and individual officer preference, can be search methods are more effective when done consistently.
Top-down: start at the head and end at the feet. Start dwelling search's on the upper-most floor and work down
Left-right: search left rear passenger seat area of a vehicle first then search right area
Outside inside:Search outside of the container first, then inside, search outside jacket pockets first, then inside pockets
Lane searches: - Answer- Used to cover large area quickly for missing persons or evidence
Divid search area into equal parallel lane that goe in the same direction
Maximum lane width is 6"
Assign officers to each lane
Search lane from end to end
Grind search - Answer- Used to cover area more thoroughly for evidence that is harder to find given crime scene
Divid search area
Max 6"
Search lane end to end
Zone search - Answer- Searches are used to cover crime scene that can be divided into obvious sections
Place search - Answer- Determined by circumstances and evidence sout. Place searches range from 4X6 closet to a 100 ace woods
Person search areas - Answer- Secure and search the person first before any container in his or her possession
Trace,DNA,weapon drug and other evidence can be found on people. Use systematic and zone methods to search people
Evidence clothing - Answer- Alway feel and look before reaching into clothing for objects that are unknown or cannot be seen
Pulling loose clothing
Using palms and fingers to gently squeeze clothing
Adjuecting or removing layers
Search head/neck - Answer- Hat
Hair
Glasses
Headphones
Behind and inside ears
Under shirts jacket color
Inside mouth
Search upper body - Answer- Bra
Under arm pits
Between breast
Between finger prints
Under belly
Jacket pockets and hoods
Under and inside watches jewelry
Search lower body - Answer- Waist band
Under belt
Inside underwear
Crotch buttocks gentian
Short pant pocket pant leg
Search feet - Answer- Socks
Inside shoes
Between toes
Shoe soles
Testimonial evidne - Answer- Statements made directly
Spontaneous utterances overheard by witness
Writtten statement
Interview and interrogation recordings
Memory stage - Answer- Stage 1-acquisition- is the person perception of event
Stage 2- retention-is time that passes between original event and recollection of a specific price of information
Stage 3-retrieval- is the recall of stored information or memory, two types of retrial recall and recongnition
Estimator variables - Answer- Affect how many people acquire stage 1 information during an event
Exposure duration- - Answer- Brief or fleeting exposures to events and people tend to reduce accuracy of information
It all happen so fast that I barely had time to think
Memory decay - Answer- It is a curve not straight line
More servere immediately after and event and level off over time
Lighting - Answer- Limited light and shadows can diminish accuracy of information [Show Less]