CSC Weapons Screening & Detection 3 — Questions and Answers
Question 1: Which of the following items would most likely NOT trigger a standard walk-through magnetometer alarm?
- Steel-toed boots
- Ceramic handgun (Correct answer)
- Titanium hip implant
- Metal belt buckle
Correct answer: Ceramic handgun
Ceramic handguns contain minimal metal components and may not trigger a standard magnetometer, making secondary screening methods critical.
Question 2: During X-ray screening, an operator notices an image that appears to show overlapping items making a suspicious area difficult to interpret. What should the operator do?
- Pass the bag and note it in a log
- Use image enhancement tools and/or request the bag be opened for physical inspection (Correct answer)
- Immediately call for evacuation of the screening area
- Ask the owner to describe the bag contents verbally
Correct answer: Use image enhancement tools and/or request the bag be opened for physical inspection
When X-ray images are unclear due to overlapping items, operators should use enhancement tools and request a physical inspection to resolve the ambiguity.
Question 3: What is the primary purpose of conducting a 'resolution search' after a walk-through magnetometer alarm?
- To document the alarm in the security log
- To determine whether the alarm was caused by a prohibited item or innocent metal object (Correct answer)
- To practice the pat-down procedure
- To reset the magnetometer's sensitivity level
Correct answer: To determine whether the alarm was caused by a prohibited item or innocent metal object
A resolution search determines whether the alarm source is a legitimate prohibited item or an innocent object like jewelry, keys, or a medical implant.
Question 4: Which factor would MOST likely cause an increase in false alarms on a walk-through magnetometer?
- High ambient humidity
- Sensitivity set too high (Correct answer)
- Screening too many people per hour
- Use of an older model magnetometer
Correct answer: Sensitivity set too high
Setting magnetometer sensitivity too high increases false positives as it detects smaller and less threatening metal objects like underwire bras, snaps, and coins.
Question 5: A subject passes through the magnetometer without alarming, but an officer observes a suspicious bulge in the subject's waistband. What should the officer do?
- Allow entry since the magnetometer cleared the subject
- Conduct additional screening including a wand check or pat-down of the area (Correct answer)
- Verbally question the subject and accept their explanation
- Wait to observe the subject's behavior in the courthouse
Correct answer: Conduct additional screening including a wand check or pat-down of the area
A visual observation of a suspicious bulge warrants additional screening even after the magnetometer clears, because non-metallic weapons won't trigger the device.
Question 6: Which action is considered a best practice when a subject claims a magnetometer alarm is caused by a medical implant?
- Accept the claim and allow entry without further screening
- Require written proof of the implant before conducting alternate screening
- Use a handheld wand or alternate screening method to clear the subject while being sensitive to their condition (Correct answer)
- Deny entry because implants cannot be verified on-site
Correct answer: Use a handheld wand or alternate screening method to clear the subject while being sensitive to their condition
Medical implant claims should be handled with sensitivity, using alternate screening such as a wand check or pat-down to clear the subject without requiring documentation.
Question 7: In courthouse X-ray screening, what does a dense black image area typically indicate about an object's material?
- Organic material such as food or clothing
- Highly dense metal such as lead or steel (Correct answer)
- Empty space or air inside the object
- Liquid-filled container
Correct answer: Highly dense metal such as lead or steel
Very dense materials like lead, steel, and thick metal components appear as nearly black or very dark areas in X-ray images due to high X-ray absorption.
CSC Weapons Screening & Detection 3
Which of the following items would most likely NOT trigger a standard walk-through magnetometer alarm?