It always makes me smile when a helicopter player complains about being shot down by an enemy with an AA weapon (stinger, igla, aa mine, etc...). As if it's unfair that a soldier on foot, in the middle of the battlefield, already busy surviving against helicopters, armored vehicles and infantry, uses a stinger to shoot down a helicopter moving freely at high speed through the air and has unlimited amno with Zuni, Tow, 30mm with thermal vision, ECM, Extinguisher, Auto-repair, mid-air repair and a phenomenal amount of places to hide, especially in Shanghai.
This is also why I always take great pleasure in destroying helicopters with my tank.