Humm. So basically what you want is:
a) NO loons within 100 meters of him (?)
or
b) LESS THAN 5 loons within 100 meters of him (?)
or
c) There are 5 specific loons (that can be from several groups?) that aren't to be within 100 meters of the player
A) is easy enough, just add a 100 meter "OPFOR not present" trigger around the player and shazam, it'll run when there aren't any enemies around.
B) is also fairly easy: just make a 100 meter "OPFOR present" trigger, and make the Condition read: count thisList < 5
That way, if there're less than 5 loons within the trigger, the trigger will activate.
C) is a little more complicated, but having something like the trigger above, except with a condition field that reads like: {_x in thisList} count [loon1,loon2,loon3,loon4,loon5] == 0 should do it (then all the loons would be named).
I'm easily confused though, so more information would be nice!
Wolfrug out.