Navy Diver 2nd Brian Williams, assigned to Commander, Task Group (CTG) 56.1, performs regularly scheduled maintenance on a scuba diving regulator. CTG 56.1 conducts mine countermeasures, explosive ordnance disposal, salvage diving, and force protection operations throughout the 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 1st Class Gary Keen/Not Released)