The BLU-113A/B serves as the warhead for which of the following?

The BLU-113A/B is specifically designed as a large, penetrating warhead, and it is used in the GBU-28A/B and GBU-28B/B precision-guided bomb systems. This warhead is known for its enhanced capabilities to penetrate hardened targets, making it particularly suitable for use against deeply buried or reinforced structures. Its design incorporates features that maximize penetration and minimize drag, which is essential when targeting such resilient objectives.

In contrast, the other options do not utilize the BLU-113A/B warhead. The GBU-15A/B and GBU-12A/B employ different types of warheads optimized for their respective mission profiles, which focus more on general ordnance or smaller precision strikes rather than heavy penetration against fortified sites. The GBU-24A/B, while also designed for precision strikes, is equipped with a different warhead type that is not the BLU-113A/B. Thus, the choice of the GBU-28A/B and B/B as the systems that utilize the BLU-113A/B accurately reflects their design purpose and capabilities in munitions operations.