Custom Jet Mission Issue - Attacked when no enemies present.

[TheCoolSideofthePillow]

I am just starting out trying to learn to make my own missions and mods here and I was messing around in the mission editor just to see about making some sort of air sortie mission where 2 squads of 4 planes just attack each other. However, I was merely trying to get the first set of planes together to be in a formation and went to test it (mostly so I could just fly around in a jet, which I rarely get to do in normal play). Even though I have no enemies placed, for some reason when I fly anywhere near any of the airports I didn't spawn at, I get hit by a missile or something and just die.

I don't have any explanation for this. It should just be an empty world with just my 4 BLUFOR jets. It's not like I am crashing; I am at about 500 altitude, the AI planes aren't even in the air, and before I die, my character even yells out, "TAKING ENEMY FIRE" or similar. What the heck is shooting me down?!

[[FRL]Myke]

Might sound like a stupid question but how do you get to the editor? Main Menu --> Singleplayer --> Editor?