TSA X-Ray Screening and Image Interpretation 4

Question 1

On an X-ray image, a flat knife positioned edge-on to the beam will most likely appear as which of the following?

Accepted Answer

A thin, dark line that is easy to overlook

Answer

Viewed edge-on, a blade presents its narrowest profile, so it shows up only as a thin dense line.

Question 2

A screener sees an area so dense that the X-rays cannot get through it, and image enhancement tools do not clear it up. What is the correct action?

Accepted Answer

Treat it as an unresolved alarm and send the bag for a physical search

Answer

An area the X-ray cannot see through could be hiding a threat, so it must be resolved with a physical search.

Question 3

What is the main purpose of Threat Image Projection (TIP) on checkpoint X-ray machines?

Accepted Answer

To insert fictional threat images into real bag images to test and train screeners

Answer

TIP places virtual threat images into real bag images to measure how alert screeners are and to train their detection skills.

Question 4

Which group lists the basic parts usually needed for an improvised explosive device (IED)?

Accepted Answer

Power source, initiator, explosive, and switch

Answer

A working IED generally needs a power source, an initiator (detonator), a main explosive charge, and a switch, connected together.

Question 5

When two or more objects overlap in a bag and hide each other's shapes on the X-ray image, this is called what?

Accepted Answer

Superimposition

Answer

Superimposition happens when overlapping items block each other, which makes threats harder to pick out.

(TSA) Transportation Security Administration Certified Practice Test