What is the purpose of the LPWS defended wall?

• A. 100-900 m, Define area the threats must pass through in order to be engaged / engageable
• B. 50-150 m, Provide cover for friendly forces
• C. 200-1000 m, Determine allowed engagement timing
• D. 10-50 m, Indicate altitude threshold

Answer: (A)

Engagement boundaries define where a system can engage threats by creating a defended wall. The wall is positioned at a distance from the LPWS—typically about 100 to 900 meters—to establish a corridor that any potential threat must cross to be engaged. This creates a controlled engagement envelope, so engagements occur within a known area, allowing proper threat assessment, timing, and coordination while reducing the risk of misidentification or collateral damage. It isn’t about providing cover for friendly forces, nor does it by itself set engagement timing or altitude thresholds; those are separate considerations. Thus, the purpose is to define the area threats must pass through in order to be engaged.