Support WBURArmy 'Leans In' To Protect A Shooter's Brain From Blast InjuryPlay04:44Download AudioJon HamiltonMay 17, 2018 ShareMarines 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. (U.S. Marines/DVIDS)