The GBU-39 and GBU-53 are also known as what?

The GBU-39 and GBU-53 are known as small diameter bombs (SDB) because they are specifically designed to be lightweight, precision-guided munitions. Their compact size allows for a higher payload capacity per aircraft, which enables multiple bombs to be carried and deployed on a single mission. The GBU-39, also known as the Small Diameter Bomb I, features a broader range for targeting while minimizing collateral damage, making it an effective tool for precision strikes. The GBU-53, known as the Small Diameter Bomb II, builds upon this concept with improved capabilities, including the use of multiple guidance systems which enhance targeting flexibility. Thus, referring to them as small diameter bombs emphasizes both their size and precision nature in military operations.