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BPA Surveillance and Detection Techniques Flashcards

6 cards from real BPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What does 'sign cutting' refer to in Border Patrol field operations?

    Answer: The skill of detecting and interpreting tracks, footprints, and other physical disturbances left by people or animals

    Sign cutting is a traditional Border Patrol skill involving reading physical traces — tracks, disturbed soil, broken vegetation — left behind by individuals crossing the terrain.

  2. Which type of sensor is commonly deployed along the U.S.-Mexico border to detect ground vibrations caused by foot traffic?

    Answer: Unattended ground sensors (UGS)

    Unattended ground sensors (UGS) buried along the border detect seismic vibrations from footsteps and transmit alerts to agents and command centers.

  3. What advantage does thermal imaging technology provide to Border Patrol Agents during nighttime operations?

    Answer: It detects heat signatures emitted by humans and animals regardless of light conditions

    Thermal imagers detect infrared heat emitted by living bodies, allowing agents to locate individuals in complete darkness or through dense vegetation.

  4. What is a 'drag road' used for in Border Patrol operations?

    Answer: A section of road dragged smooth to show fresh footprints, enabling agents to detect recent crossings

    Drag roads are periodically smoothed (dragged) so any foot traffic leaves visible impressions, allowing agents to detect and track recent crossings.

  5. Which aircraft is commonly used by CBP Air and Marine Operations (AMO) for border surveillance?

    Answer: P-3 Orion maritime patrol aircraft

    The P-3 Orion, adapted for maritime and land surveillance with radar and sensor systems, is one of the key fixed-wing aircraft used by CBP AMO for border monitoring.

  6. When tracking footprints in the field, what does an asymmetrical stride pattern most likely indicate?

    Answer: The individual may be carrying a heavy load on one side or has an injury affecting gait

    Asymmetrical stride patterns suggest uneven weight distribution, which can result from a heavy load on one side, an injury, or an irregular gait.