Talk:Operation: Shadow Debt/@comment-10875806-20160127053223/@comment-27197089-20160127061500

I've only been doing them solo.

For Defence and Interception I have the mark down to the exact spot you have to pass before they start to spawn.(It doesn't change for each map layout).

For other missions I only see the spawn flicker the moment I step into a room or tiny little closet in some cases and never even a few seconds afterwards so I'm fairly sure it's room based.