The BLU-113 is a type of bomb used by the United States military, specifically designed for penetrating hardened targets. It is a part of the family of bunker buster munitions, which are engineered to penetrate deep into the ground or reinforced structures before detonating. This capability makes the BLU-113 effective against fortified enemy positions. Weighing approximately 4,000 pounds, the BLU-113 is typically delivered by aircraft, such as the B-2 Spirit or F-15E Strike Eagle. Its design includes a robust casing that allows it to withstand the impact of hitting a target at high speeds, ensuring it reaches its intended depth before exploding.