TSA Explosives Trace Detection and Alarm Resolution

Question 1

What is the main purpose of explosives trace detection (ETD) at a checkpoint?

Accepted Answer

To detect microscopic traces of explosive residue on a person or item

Answer

ETD samples surfaces for minute particles or vapors of explosive material. It adds a layer of screening beyond imaging and metal detection.

Question 2

Why do officers change gloves between samplings or pat-downs?

Accepted Answer

To prevent cross-contamination that could cause false alarms or hide real traces

Answer

Trace particles transfer easily. Changing gloves prevents residue from passing from one passenger or item to another and keeps results accurate.

Question 3

A bag alarms during screening and the cause is not yet determined. What should the officer do?

Accepted Answer

Resolve the alarm through additional screening per standard procedure before the bag is cleared

Answer

An alarm must be resolved, not assumed harmless. Officers follow standard operating procedures with additional screening, and escalate to a supervisor if it cannot be resolved.

Question 4

An alarm cannot be resolved using standard procedures. What is the correct next step?

Accepted Answer

Notify a supervisor and follow escalation procedures

Answer

Alarms that remain unresolved must be escalated to a supervisor or the designated authority under established procedures. They may not be cleared by guesswork.

Question 5

Why is it important to follow the same sampling procedure every time with trace detection equipment?

Accepted Answer

Consistent procedure produces reliable, comparable results

Answer

Consistent sampling gives reliable results and reduces human error, which matters in a security setting.

(TSA) Transportation Security Administration Certified Practice Test

(TSA) Transportation Security Administration Certified Practice Test

TSA Explosives Trace Detection and Alarm Resolution