Which air defense zone is established around an airbase and limited to the engagement envelope of short-range air defense weapons systems defending that base?

• A. BDZ Base defense zone
• B. HIDACZ high-density airspace control zone
• C. HIMEZ high-altitude missile engagement zone
• D. JEZ joint engagement zone

Answer: (A)

The main idea here is the Base Defense Zone. It’s an air defense area established specifically around an airbase to protect that base from threats, and it is limited to the engagement envelope of the short-range air defense weapons systems defending the base. This means only the weapons within those SR systems can engage targets inside this zone, ensuring that operations stay within the base’s protective perimeter and within the capabilities of its immediate defenses.

High-density airspace control zones are for managing very busy airspace with many friendly aircraft and devices coordinating simultaneously; they cover a larger, shared airspace rather than protecting a single base. High-altitude missile engagement zones are designed for higher altitude missile defense, not restricted to a base and its short-range systems. Joint engagement zones involve coordinated engagements across multiple services or platforms, not the base-specific, SR-limited envelope described here.