@HeroesandvillainsOS  You know, I was just about to make a pretty similar post. I saw this yesterday myself. Question: Are you using a custom staticdata.sqf file for military logistics?

Not that I've knowingly taken one in use. Apparently that's a file where you can declare custom blacklists etc.?

@HeroesandvillainsOS I have a feeling, whether or not you are, these are logistics choppers resupplying your virtual AI squads (I may be way off on that though).

I thought of that for a short while but yesterday's test did make it clear to me that these helicopters don't deliver anything. They just appear out of now where and move to hover over an objective.
Ok, testing for three hours straight that same mission one of those idle armed PO-30 Orca's surprised me completely: all of a sudden (apparently having been sent by OPCOM) it started strafing over an objective my faction had lost at some point and giving support by firing at the enemy on the objective. Sure that was cool and all. But I'm more bothered by the fact that these helicopters keep popping out of nowhere when no one has requested them.

Tested also with A3 1.56.134787, @CBA_A3 2.3.1.160220 and @ALiVE 1.0.2.1603251 with no change compared to the original behaviour.

It can be as bad as having to make 4 subsequent restarts of a mission on dedicated server to get rid of most of the unneededly spawning helicopters as I recorded here on 03/31/2016:

first launch of the mission at 9.09AM (this launch also suffered from 4 times out of 8-9 ALiVE is forgetting that there is force pool):

for bigger resolution: http://i1370.photobucket.com/albums/ag278/testusah123/helics1_zpsxbap7mv7.png

restart at 9.11AM

for bigger resolution: http://i1370.photobucket.com/albums/ag278/testusah123/helics2_zps3ki85s51.png

restart at 9.13AM

for bigger resolution: http://i1370.photobucket.com/albums/ag278/testusah123/helics3_zpszdb2swun.png

restart at 9.13AM finally arrived with the situation that there was _only 2_ unneededly spawned helicopters

for bigger picture: http://i1370.photobucket.com/albums/ag278/testusah123/helics4_zps6kufsu3w.png

With the new version of ALiVE (currently 1.0.2.1603251) I had hopes that this behaviour would have magically disappeared and went on to just in case create my old MP mission from scratch with the newest version but nope, the helicopters still do spawn.

I'm an avid user of the override mechanics in mil. (mil.) & mil. (civ.) module and had hopes that maybe this behaviour would have something to do with those and went on to test with using only the default Force sizes as small as 200 and 100 but nope, still there were occurrences of helicopters spawning.

And only with the latest ALiVE (basically today, 04/02/2016) I am trying to blacklist these helicopters in ALiVE Required module's init field with

ALiVE_PLACEMENT_CUSTOM_UNITBLACKLIST = ["O_Heli_Attack_02_F", "O_Heli_Light_02_unarmed_F"]; ALiVE_PLACEMENT_CUSTOM_VEHICLEBLACKLIST = ["O_Heli_Attack_02_F", "O_Heli_Light_02_unarmed_F"];

which doesn't bring any solution to this behaviour.