Construction Mechanic 3rd Class Bryant Ma (top) and Construction Mechanic Constructionman Austin McCain, both assigned to Naval Mobile Construction Battalion (NMCB) 133 in support of Commander, Task Force (CTF) 75, troubleshoot a leak on the diesel engine of a 27,800-pound Medium Tactical Vehicle Replacement truck. NMCB 133 provides expeditionary construction and engineering to include maintenance and operation of expeditionary bases and facilities, tactical sustainment bridging, humanitarian assistance through construction civic action details and civic action teams and theater disaster response capabilities in the U.S. 7th Fleet area of operations. (U.S. Navy Combat Camera photo by Mass Communication Specialist 1st Class Cory Asato)