Certified Transportation Security Administration Driver Forensic Science & Analysis 2 — Questions and Answers
Question 1: When collecting trace evidence from a vehicle suspected of transporting contraband, which technique is most appropriate for fabric surfaces?
- Tape lift collection (Correct answer)
- Swab collection
- Vacuum filtration
- Direct scraping
Correct answer: Tape lift collection
Tape lifts are the preferred method for collecting trace evidence such as fibers, hairs, and particles from fabric surfaces without damaging the substrate.
Question 2: A TSA driver discovers a suspicious white powder in a transport vehicle. What is the FIRST action that should be taken?
- Collect a sample for testing
- Evacuate and isolate the area (Correct answer)
- Attempt to identify the substance visually
- Transport the vehicle to a secure facility
Correct answer: Evacuate and isolate the area
Evacuating and isolating the area is the first priority to prevent exposure and contamination before any further assessment or collection occurs.
Question 3: Which type of evidence is considered most reliable in forensic science for identifying an individual?
- Eyewitness testimony
- DNA evidence (Correct answer)
- Fingerprint evidence
- Circumstantial evidence
Correct answer: DNA evidence
DNA evidence is considered the most reliable identifier because each individual's DNA is unique and can withstand legal scrutiny when properly collected and analyzed.
Question 4: In forensic documentation, what does the term 'chain of custody' primarily ensure?
- Evidence is stored at the correct temperature
- The integrity and accountability of evidence from collection to court (Correct answer)
- Evidence is processed within 24 hours
- All suspects are interviewed in sequence
Correct answer: The integrity and accountability of evidence from collection to court
Chain of custody is a legal process that tracks the seizure, custody, control, transfer, and analysis of evidence to ensure its integrity and admissibility in court.
Question 5: A TSA driver notices a vehicle's cargo has been tampered with and finds pry marks on containers. What type of evidence do the pry marks represent?
- Biological evidence
- Testimonial evidence
- Physical/toolmark evidence (Correct answer)
- Documentary evidence
Correct answer: Physical/toolmark evidence
Pry marks are toolmark evidence, a form of physical evidence that forensic examiners can analyze to potentially match to specific tools.
Question 6: When securing a crime scene in a transportation facility, what is the purpose of establishing an inner and outer perimeter?
- To separate law enforcement from TSA personnel
- To protect the scene and control access while allowing operations to continue safely (Correct answer)
- To divide evidence collection responsibilities
- To comply with OSHA workplace safety requirements
Correct answer: To protect the scene and control access while allowing operations to continue safely
A dual perimeter system protects the immediate evidence zone (inner) while the outer perimeter controls access and allows emergency operations to continue without contaminating evidence.
Question 7: Which of the following best describes 'Locard's Exchange Principle' and its relevance to transportation security?
- Every vehicle requires a paper trail of all maintenance records
- Every contact between a person and environment leaves a trace (Correct answer)
- All contraband exchanges must be monitored electronically
- Security personnel must log every interaction with passengers
Correct answer: Every contact between a person and environment leaves a trace
Locard's Exchange Principle states that whenever two objects come into contact, material is exchanged between them, which is foundational to forensic evidence collection in any environment including transportation.
Certified Transportation Security Administration Driver Forensic Science & Analysis 2
When collecting trace evidence from a vehicle suspected of transporting contraband, which technique is most appropriate for fabric surfaces?