To avoid any misunderstanding - the helicopter without pilot really exists :) it's not a bug - it's one of the UAVs and player will have the possibility to use them in game.
Three years after the conflict in Chernarus, portrayed in the original ARMA 2, a new flashpoint in the Green Sea region heats up and coalition forces led by the US Army are sent to Takistan to quickly restore peace and prevent further civilian casualties in the unstable region.
The first instalment in the series of ingame videos, introduces the factions in ARMA 2 Operation Arrowhead,
forthcoming standalone expansion pack to ARMA 2. This video introduces Alliance forces lead by the US Army which is sent to Takistan to quickly restore peace and prevent further civilian casualties in this unstable region.