l Special operating. Individual Activity Address Groups Individual   activity   address   groups   are representative of a single command or unit, either afloat or ashore. For example: DTCI—COMNAVSURFLANT; and SSMA—CHIEF OF NAVAL OPERATIONS (CNO). Collective Address Groups Collective address groups represent two or more commands or activities. Included in this group are commanders and their subordinate commanders. For example: JTBC—DESRON 6; and YQHV—SUBRON  16. Conjunctive and Geographic Address Groups Conjunctive  and  geographic  address  groups  are discussed  together  because  they  are  interrelated  in  their usage. Conjunctive  address  groups  have  incomplete meanings  and  must  have  geographic  address  groups added to them to denote a specific command or location. For this reason, conjunctive address groups are used only with one or more geographic address groups. For example, the conjunctive address group XZKW means “All ships present at ___ .” To complete the meaning, it must be followed by a geographic address group. Geographic address groups are the equivalent of geographical  locations  or  areas.  They  are  always preceded by conjunctive address groups. For example, the address group DEXL could represent Newport, R.I. Therefore, all ships present at Newport would be addressed XZKW DEXL. Address Indicating Groups Address indicating groups (AIGs) represent 16 or more specific and frequently recurring combinations of action  and/or  information  addressees.  The  purpose  of AIGs is to increase the speed-of-traffic handling. They shorten the message address by providing a single address group to represent a large number of addressees. This eliminates individual designators for each address used in the heading. Messages  that  are  repetitively  addressed  to  a constant group of 16 or more addressees can effectively be  processed  by  an  AIG  address  designator.  For example, let’s assume that a hypothetical AIG (AIG 31) is used to address SUBMISS/SUBSUNK message traffic by COMSUBLANT to 30 action addressees and 35 information addressees. Since a single AIG (AIG 31) is used, 65 call signs and address groups are eliminated from the heading of the message. AIGs  are  normally  created  when  particular  types  of message traffic become repetitive enough (at least 12 times a year) and are addressed to enough of the same addressees to warrant it. Among such message traffic are: l l l l l l Alerts, air defense warnings, operational or emergency actions, and so forth; Destructive   weather   warnings,   such   as hurricanes and typhoons; Logistical transactions and reports; Intelligence summaries; Movement reports, such as aircraft, ships, and personnel; and Notices to airmen (NOTAMs). A point for you to remember is that an AIG will not be established for groups of addressees numbering fewer than 16. A complete listing of AIGs by number, cognizant authority, and purpose is contained in  U.S. Navy Address Indicating Group (AIG) and Collective Address Designator (CAD) Handbook, NTP 3 SUPP-1. A partial listing of AIGs, along with specific action and information addressees, can be found in ACP 100 U.S. SUPP 1. Special Operating Groups Special  operating  groups  (SOGs)  are  four-letter groups that are identical in appearance to address groups. SOGs are provided for use in the headings of messages to give special instructions. However, SOGs are not used unless specifically authorized by CNO. They must always be encrypted. SOGs may be used singly or with encrypted or unencrypted call signs or address  groups. DISTRIBUTION CLERK The distribution clerk reproduces copies of the messages according to the routing instruction of the inrouter  and  outrouter.  The  distribution  clerk  is responsible for making the required number of copies 2-18