Which step of a vehicle search involves checking the undercarriage?

The correct step for checking the undercarriage of a vehicle during a search is identified as Step 3. This stage is crucial because the undercarriage can conceal potential threats, such as explosives or hidden compartments for illicit items. Performing a thorough examination of this area helps ensure that no hidden dangers are overlooked, which is essential for overall force protection.

In the sequence of a vehicle search, earlier steps focus on initial inspections and exterior assessments, while later steps may involve internal searches and further analysis. Step 3 specifically emphasizes a more detailed evaluation of the vehicle's structure, including the undercarriage, to enhance safety and security measures. This thorough approach reduces vulnerability to any hidden risks that could pose a danger to personnel or operations.