[REQ] Need a tutorial on mission scripting/flow

[unacknowledged 10]

Hello there BI Community!

Yet again I am in need of your assistance!

My friend had a mission a while back which was originally DZS (Dynamic Zombie Sandbox) But just as a test one day we decided to go on a little convoy out the map in the dark and low and behold we became under attack by AI Infantry ( US Soldiers ) And when we killed those and made camp on a hill we'd usually be targeted by a flare on the ground and shortly after a drone would unleash hell on us until it ran out of ammo. Not only that but Chinooks also flew in and dropped off troops and gunned us down. I wanna know how the hell this was possible and how it can be done? It's been so long since I played it with him, he no longer has the file and it was edited by somebody else. So can somebody please do a tutorial on this or show me where it is located for download? It was intense fun, we edited the mission parameters to make it dark as possible. I want that fun back!

As a side note: The encounters we're random, there was no time limit for them. We could be driving one minute the next under fire or driving for an hour and encountering nothing, it was completely random.

Thank you guys :)