What is one of the five characteristics required to designate a contact as mine-like?

One of the five characteristics required to designate a contact as mine-like is shape. This characteristic is significant because the specific shape of a mine can help distinguish it from non-mine objects and can provide crucial information during identification and assessment. Various types of mines have distinct sizes and shapes that give them a recognizable profile, which is essential for field personnel who need to differentiate between potentially hazardous objects and safe ones.

Understanding the shape of a mine also plays an important role in training and operational procedures, as it aids in the visual identification of threats in the area of operations. Recognizing the unique shapes associated with various mine types is necessary to ensure safety and effectiveness in demining efforts.

The other characteristics, while also important, pertain to different aspects that might not be as immediately recognizable or definable as shape, making shape a foundational characteristic in mine identification.