Mission 4, attacking the comm tower on the mountain.
According to the briefing you should have 8 K type hellfires, but you start up with 8 type L hellfires.
I had a difficult time taking out targets with type L's until i read the briefing again and saw it listed type K hellfire's. I changed the loadout to 8 type K hellfire's and my gameplay got a lot better.
I assume the starting loadout on the bird is not as intended for this mission?