Construction Battalion Maintenance Unit 303 Mainbody

The mission of Construction Battalion Maintenance Unit 303 Mainbody (CBMU 303) is to provide the Navy and Marine Corps with technically trained personnel and specialized equipment to perform public works functions at advance bases of a contingency construction nature and to backfill Public Works organizations of existing bases or civilian facilities with immanent danger or other emergency situations.

Source: CBMU 303 Facebook Page