4th AASP Fleet (a Nepleslian plot) is not the same as Unit 4 (a Yamataian police plot). They belong to two different factions and have VERY different premises.
The two posts made by this user, which I deleted, were in the 4th AASP forum. Reading the whole character page, I have to say that it sounds like she's trying to make a Nepleslian and place her in a Yamataian plot.
So I need to ask the OP what his/her intent is with regards to the character. Are you trying to join a Nepleslian or a Yamataian plot? Military or Civilian? Those clarifications will determine who is the best resource to help him/her out.