Xenonauts is a PC strategy game due for release in 2013. It is a spiritual successor to the classic X-Com strategy games, putting the player in control of an organisation defending the world from an alien invasion. It is a grand strategy game that involves building and managing bases across the entire planet, controlling jet fighters and ground troops in battle against the alien forces, then researching captured extraterrestrial technology to unlock their secrets! Linux version uses WINE.
This is the mission briefing screen shown when a ground combat mission is beginning.
It's a bit misleading if the chopper's machine gun is firing at something - the ingame Chinook is unarmed and only serves as a transport aircraft, it can't even suppress enemies on the ground. Looks cool, though.
Kakra, I understand your point about that although it could just be the boys inside firing out of the chinook, and besides it's more to look cool than anything practical :)