|Pasternak is a pain. The second you lose sight of him, he goes stealth and you have to find him all over again because you automatically lock onto a UAV that is aiding him. Once he gets killed though, the mission ends.|
NOTE: everytime pasternak uses his ESM he has to slow down, and cannot go stealth. Try to just follow him, until he uses his ESM then machine gun him and missle him.
If you are playing Expert difficulty try to stay as close to the ground as possible since the radar advantage is lost for the enemy. When you get a chance get close to him and send allied assault, shoot a couple missles and bail. Rinse and Repeat.