In 1991, during the first Gulf War, the U.S. military recognized a need for weapons that could pierce underground concrete bunkers and hardened facilities.
In three weeks military researchers fashioned a hardened steel bomb made from an artillery casing that could be dropped from a high altitude, pierce earth and concrete, and detonate inside underground bunkers.
In 1991, during the first Gulf War, the U.S. military recognized a need for weapons that could pierce underground concrete bunkers and hardened facilities.
In three weeks military researchers fashioned a hardened steel bomb made from an artillery casing that could be dropped from a high altitude, pierce earth and concrete, and detonate inside underground bunkers.
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