Copyright 2018 NPR. To see more, visit ARI SHAPIRO, HOST: The U.S. military is speaking publicly for the first time about the potential health risks of firing certain heavy weapons. These shoulder-fired large guns produce a powerful explosion just inches from the shooter's head. As NPR's Jon Hamilton reports, the military is investigating whether just pulling the trigger can injure the brain. JON HAMILTON, BYLINE: In Iraq and Afghanistan, the military learned a lot about what a big explosion can do to the brain. (SOUNDBITE OF EXPLOSION) HAMILTON: Roadside bombs were the major threat, says Tracie Lattimore, who directs the Army's traumatic brain injury program. TRACIE LATTIMORE: We were totally concerned about the enemy weapon and the impact of the...
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