Missions: NRJ-500 Challenge and Snapshot #47.
I know that the latter isn't really a mission and I'm really sorry, but I don't know where else to put it. If you don't have Dark52's snapshots map, let me explain which one it is. It's the snapshot at the military dock, the one of the ship. If you enter the dock, you get an instant four stars.
Thank you so much in advance!