TSA Explosives Trace Detection and Alarm Resolution 4

Question 1

An ETD alarm cannot be resolved through standard procedures. What is the appropriate escalation?

Accepted Answer

Notify the supervisor, who follows procedures that may include law enforcement

Answer

Unresolved alarms are escalated to a supervisor, who may bring in law enforcement or other specialized resources according to procedure.

Question 2

Why is ETD often used alongside X-ray and other screening technologies?

Accepted Answer

It detects chemical traces that imaging technology may not reveal

Answer

ETD finds microscopic chemical residue, which complements imaging systems that detect shapes and densities.

Question 3

Before swabbing a passenger's hands with ETD, what should the officer do?

Accepted Answer

Explain the procedure to the passenger

Answer

Explaining the procedure first gets the passenger's cooperation and supports professional, respectful screening.

Question 4

A passenger refuses to let an alarmed item be resolved. What is the usual outcome?

Accepted Answer

The item or passenger can't continue into the sterile area

Answer

Screening must be completed before access to the sterile area, so refusing alarm resolution means the passenger or item can't proceed.

Question 5

Why should an officer avoid touching the sampling area of an ETD swab with bare skin?

Accepted Answer

Skin contact can contaminate the swab and skew results

Answer

Handling the sampling surface can transfer residue or oils that affect detection accuracy.

(TSA) Transportation Security Administration Certified Practice Test