A Seabee assigned to Naval Mobile Construction Battalion (NMCB) 11 uses a grader to level a mock runway during Airfield Damage Repair (ADR) training at Naval Construction Battalion Center, Gulfport, MS. ADR is designed for contingency operations in various environments that may require expedient construction of an airfield landing strip to enable aerial capabilities in select areas of operation. (U.S. Navy photo by Mass Communication Specialist 1st Class Collin Turner/released)