AdvertisementArmy 'Leans In' To Protect A Shooter's Brain From Blast Injury04:44Download AudioResumeMay 17, 2018Jon HamiltonfacebookEmailMarines based in Okinawa, Japan, fire an M136 AT-4 rocket launcher as part of a weapons training exercise on the Kaneohe Bay Range Training Facility, in 2014. (Lance Cpl. Matthew Bragg/U.S. Marines/DVIDS)