Kato,
Have a look at these:
http://www.ungiwg.org/maps/?q=system...l+Handbook.pdf
These are map symbols that are specialised to UN Peacekeeping I have used in my own TMP and T2K games.
I think they would be very useful for the Project because unlike pure military sets, they incorporate crucial information on political, social and criminal activity. The UN symbols have additional designations and symbols for useful non-combat events and objects like "Safe House", "Refugees", "Ammunition Cache", "Assassination/Execution/Murder", "Drug Operation", "Drive By Shooting", etc. which are things teams would be dealing with.
Tony