So I'm trying to get the ghost award on Milwaukee Junction. I can get through the whole map with 0 takedowns, 0 suspicious cameras and 0 alerted guards. And I can talk Zeke down and save Josie. But I still don't get Ghost. I've watched GreasedScotsman's walk-through and have no idea what I'm doing wrong.
I have this feeling it's that helicopter buzzing around on the roof...
Any ideas?