Certified Transportation Security Administration Driver Forensic Science & Analysis 3 — Questions and Answers
Question 1: During a vehicle inspection, a TSA driver finds a package with an unknown liquid leaking from it. Which hazmat placard color typically indicates a flammable liquid?
- White
- Red (Correct answer)
- Blue
- Green
Correct answer: Red
Red hazmat placards are used internationally to designate flammable liquids and flammable gases per DOT and international hazardous materials standards.
Question 2: In forensic analysis of transportation incidents, what is the primary purpose of photographing tire tracks before casting them?
- To create a backup record if the casting fails (Correct answer)
- To measure wheelbase distance
- To satisfy reporting requirements only
- To identify the vehicle manufacturer
Correct answer: To create a backup record if the casting fails
Photographing tire tracks before casting creates a permanent backup record of the original evidence state in case the casting process disturbs or destroys the impression.
Question 3: A suspicious device is found in a transport vehicle. The TSA driver should NOT do which of the following?
- Call for bomb disposal immediately
- Evacuate nearby personnel
- Use a radio or cell phone near the device (Correct answer)
- Note the time and location of discovery
Correct answer: Use a radio or cell phone near the device
Radio and cell phone transmissions can trigger certain explosive devices, making their use near a suspicious device extremely dangerous.
Question 4: What is the forensic significance of recording the GPS coordinates and timestamp when discovering potential evidence during a TSA transport mission?
- It satisfies union reporting requirements
- It establishes location provenance and temporal context for chain of custody (Correct answer)
- It allows supervisors to track driver locations
- It is required for vehicle insurance purposes
Correct answer: It establishes location provenance and temporal context for chain of custody
GPS coordinates and timestamps establish the precise time and location of discovery, which is critical metadata for maintaining chain of custody and evidence admissibility.
Question 5: Which latent fingerprint development technique is most appropriate for a non-porous surface such as a vehicle window?
- Ninhydrin spray
- Aluminum powder dusting (Correct answer)
- Iodine fuming
- Anthracene powder
Correct answer: Aluminum powder dusting
Aluminum powder (or similar metallic powders) adheres to the oils in latent fingerprints on non-porous surfaces like glass and metal, making them visible for photography.
Question 6: When a TSA driver witnesses an incident involving potential criminal activity, their written report should be completed:
- Within 72 hours to allow full recollection
- As soon as safely possible while memory is fresh (Correct answer)
- Only after consulting with a supervisor
- After reviewing any available surveillance footage first
Correct answer: As soon as safely possible while memory is fresh
Written incident reports should be completed as soon as safely possible because human memory degrades quickly and early documentation provides the most accurate account.
Question 7: In the context of forensic science applied to transportation security, what does 'presumptive testing' mean?
- A definitive laboratory test that proves the identity of a substance
- A field test that indicates the possible presence of a substance but requires confirmation (Correct answer)
- An assumption made by security officers based on visual inspection only
- A test conducted prior to receiving a search warrant
Correct answer: A field test that indicates the possible presence of a substance but requires confirmation
Presumptive tests are rapid field tests that suggest the likely presence of a substance but are not conclusive and must be confirmed by laboratory analysis.
Certified Transportation Security Administration Driver Forensic Science & Analysis 3
During a vehicle inspection, a TSA driver finds a package with an unknown liquid leaking from it.
Which hazmat placard color typically indicates a flammable liquid?