The following video is a quick, safe and efficient method to complete Situation #8 "No Intel" as well as earn all 3 stars for the side objectives along the way.
* Consider switching to semi-automatic fire using

for greater accuracy and ammo conservation.
* Enemy positions can vary over repeated plays, and hence vary from the video, particularly if they are alerted by your drone and/or your gunfire.
* Watch out for the Bomber - try and take him down with a headshot - if he detonates nearby, your health will most likely drop below 50 and you will miss out on one star.
* Evacuate the building quickly as soon as you grab the hostage - you can safely jump to the ground rather than rappelling.
* Leave the hostage in cover behind the van at the opposite corner of the building from where you started. Then clear enemies on the way to the nearby extraction point first, and return to pick up the hostage afterwards.