Chief Machinist’s Mate Jody Greenhill places a cover on Chief Electronics Technician (Select) Andrew Pfeffer as he is advanced to the rank of Chief Petty Officer during the Naval Nuclear Power Training Command Fiscal Year 2016 Chief Pinning Ceremony September, 16, 2015 at Joint Base Charleston - Weapons Station, S.C. Staff, students, family and friends watched as Pfeffer and 28 other Chief Selects donned anchors for the first time. (U.S. Navy photo/Mass Communication Specialist 2nd Class Jason Pastrick)