As the guys have said, the key to this one is the snipers rifle. If you take your time rather than rushing in you can quite easily complete this mission without taking a single hit.
The first (hanger) part is simple. Just get out of you’re vehicle in front of the large plane directly opposite the entrance to the hanger. At this range you can use the snipers rifle to take them all out with safety (just move left and right to get better positioning).
As for the construction yard – just move around the outside of the ‘maze’ and get higher ground – you’ll be able to pick the various dudes off no problem. With being at long range – even if they fire at you they are very unlikely to hit you before you put a bullet in their heads. If in doubt – lob a few grenades!
:thumbsup: