170608-N-YG415-063 OKINAWA, Japan (June 8, 2017) Steelworker 2nd Class Ethan Sobalvarro, assigned to Naval Mobile Construction Battalion (NMCB) 3, uses a bull float to smooth concrete for a defense training site at Marine Corps Air Station Futnema in Okinawa, Japan. NMCB-3 is forward deployed to support major combat operations, humanitarian assistance and disaster relief operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael Gomez/Released)