These folks should be able to help. I remember a section somewhere on the site about units awards, I just couldn't find it.
Good luck.
Military Human Resource Records
http://www.npc.navy.mil/Npc/Templates/Generic.aspx?NRMODE=Published&NRNODEGUID={73BD62C1-315D-48B1-B560-FC16F7822B28}&NRORIGINALURL=%2fCareerInfo%2fRecordsManagement%2f RetRcds.htm&NRCACHEHINT=Guest#Awards