A Mass Casualty event is pretty much exactly what it sounds like. When a military unit sustains so many injuries that it can no longer support itself, it becomes what is known as a Mass-Cas event. This doesn’t happen very often, thankfully, although we know of some other examples where casualties became overwhelming, such as Operation Gothic Serpent or the Extortion 17 crash.
One such event happened Saturday night to 3rd Ranger Battalion during a night operation in Southern Afghanistan.
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