170220-N-OH262-415 NORFOLK (Feb. 20, 2017) Civil Service Mariners assigned to the Military Sealift Command hospital ship USNS Comfort (T-AH 20) use a mooring winch to bring in mooring lines as the ship departs Naval Station Norfolk. Comfort's underway period was part of the 2017 Comfort Exercise (COMFEX). The exercise is a quarterly training battery designed to keep the medical personnel, support staff and Civil Service Mariners who serve on board the the ship proficient in their duties. Comfort provides an afloat, mobile, acute surgical medical facility when called upon to the U.S. military, and hospital services to support U.S. disaster relief and humanitarian operations worldwide. (U.S. Navy photograph by Bill Mesta/Released)