Defense in depth describes which concept?

• A. Positioning to increase fire volume as the enemy approaches the asset
• B. Spreading fires evenly around the asset
• C. Reducing defense as threat grows
• D. Concentrating fire on a single target far away

Answer: (A)

Defense in depth is about creating multiple layers of protection and ramping up engagement as the threat closes. You position sensors and fires so that, as the enemy approaches the asset, the firepower becomes more concentrated and effective, taking advantage of range and timing to attrit or stop the attacker before they reach the asset. This layered, escalating approach gives more time to detect, react, and defeat the threat with increasing force where it matters most.

Spreading fires evenly around the asset dilutes effectiveness and coverage, reducing the advantage of layered defense. Reducing defense as threat grows contradicts the whole concept of defense in depth, which relies on maintaining or increasing defenses as the danger rises. Concentrating fire on a single distant target ignores the benefits of multiple engagement layers and the progressive buildup of firepower as the threat moves in.