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GBU-39 Small Diameter Bomb (SDB)
The GBU-39 are a series of US-developed, 250 lb (113 kg)-class, air-dropped, stand-off, precision glide bombs, which were developed to target fixed hardened and non-hardened targets. They do this with greatly-reduced collateral damage when compared to the similar weight GBU-38 Joint Direct Attack Munition (JDAM) series. The GBU-39 family, which are generically referred to as the Small Diameter Bomb (SDB), are known to be made up of the GBU-39/...
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