171118-N-GZ832-0017 OKINAWA, Japan (Nov. 18, 2017) Builder 1st Class Reginald Cyr instructs Builder 2nd Class Xavier Spencer and Steelworker 2nd Class Johnny Hagemann, all assigned to Naval Mobile Construction Battalion (NMCB) 4, proper handling and procedures for the next training evolution. NMCB’s are ready to support major combat operations, humanitarian assistance/disaster relief operations, and provide general engineering support to Navy, Marine Corps, and joint operational forces. (U.S. Navy photo by Mass Communications Specialist 2nd Class Benjamin Stevens/Released)