3.   Special   series   NECs–These   NECs   are   not related to any particular rating. They are used to identify billet requirements that do not have a rating description. Special  series  NECs  are  general  in  nature  and  can  be held  by  several  ratings.  The  following  are  examples  of special series NECs: Instructor 9503  all  ratings ASIS  Combat  System 9537 FT, ET, ST, Technician EW, IC, GM Collateral  Duty  Alcoholism 9521  all  ratings Advisor Source Ratings Rating  series  NECs  are  assigned  to  qualified personnel in designated source ratings. They are also assigned  to  apprenticeship  rates  and  striker-identified rates  applicable  to  a  designated  source  rating. Certain E-8/E-9 compressed ratings are not listed as source  ratings  for  NECs;  however,  personnel  advanced to E-8 or E-9 do not lose NECs previously assigned. You should not nominate or send your people to courses of instruction to earn NECs unless they are in the proper source rating or apprenticeship. For example, only personnel in the Photographer’s Mate (PH) rating may  earn  NEC  PH-8144,  Motion  Picture/TV  Director, because PH is the only source rating for that NEC. However, both PHs and Journalists (JOs), if otherwise qualified,  can  earn  NEC  PH-8146,  Motion  Picture Script Writer, because PHs and JOs are source ratings for that particular NEC. Personnel who already have a rating series NEC should not normally be nominated for, or sent to, a course of instruction to earn an additional rating series NEC. However, they may take the course if it is a logical progression  from  their  earlier  specialty  training.  They also may take the course if their NEC embodies an outdated  technology  or  if  they  are  in  an  approved program for a formal change in rating. Sequencing  NECs Enlisted  personnel  on  active  duty  may  have  up  to five NECs. The first two, or primary and secondary, NECs (PNEC and SNEC) are reflected in section 4 (fig. 6-1)  of  the  Enlisted  Distribution  and  Verification  Report (EDVR). Section 9 of the EDVR lists all five NECs a person  may  have.  A  sequence  code  is  assigned  to  each NEC. NEC sequence code numbers range from 1 to 8, and only one sequence code number is assigned to an NEC. Entry series NECs are assigned sequence code number 1. All other NECs are assigned a code number 2 through 8. The lower the sequence code number, the higher the NEC priority; for example, sequence 2 takes precedence over sequence 3. If a person has two or more NECs  with  the  same  sequence  code  number,  the  NEC for  which  the  person  most  recently  qualified  takes precedence, except in unusual circumstances. Justification for NECs Being Assigned to a Billet Justify  equipment  or  billet  function  changes  when you submit requests for assignment of an NEC to a billet or  for  changes  to  your  authorized  manpower  NEC billets. Keep the following policy in mind when you consider  changes  or  requests  with  regard  to  NEC assigned  billets: Assign  NECs  only  to  billets  authorized  on Manpower   Authorizations   (MPAs),   OPNAV 1000/2, for source ratings for the NEC. Minimize secondary NEC assignments. If you need to assign a secondary rating series NEC to a billet, place the NEC that best describes the billet  requirement  in  the  primary  NEC  position. Adhere to minimum and maximum paygrades identified for the various NECs in the Manual of Navy  Enlisted  Manpower  and  Personnel Classifications  and  Occupational  Standards, Section  II,  NAVPERS  18068E,  when  assigning NECs to billets. Enlisted  Women’s  Billet  Designation In the interest of efficient distribution and use of personnel,  procedures  have  been  established  to  identify certain billets ashore requiring women petty officers. Conversion NEC WP-9999 identifies these billets. This NEC maybe used as either a primary or secondary NEC on MPAs. Shore billets designated for women petty officers are intended to ensure the assignment of enough women  petty  officers  to  fill  certain  functions  of  an activity.  These  functions  involve  the  supervision, training,  and  counseling  of  enlisted  women.  Such  billets include  company  commanders  in  Recruit  Training Commands (RTCs) and billets in correctional centers where  women  are  confined. Be aware of and identify billets qualifying for NEC WP-9999,  and  submit  appropriate  MPA  change  requests 6-3