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Marines shield themselves from a detonated explosive charge during a breaching exercise. Modern body armor better protects warfighters against shrapnel from explosive blasts. However, they still face the resulting blast pressure and shock wave that could cause traumatic brain injury. (U.S. Marine Corps photo by Sgt. Emmanuel Ramos)

Marines shield themselves from a detonated explosive charge during a breaching exercise. Modern body armor better protects warfighters against shrapnel from explosive blasts. However, they still face the resulting blast pressure and shock wave that could cause traumatic brain injury. (U.S. Marine Corps photo by Sgt. Emmanuel Ramos)

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