Broadcast is a map from Call of Duty: Modern Warfare 2. It was added via DLC. This is the level in the Story Mode - Charlie Don't Surf, though they have expanded it greatly. Very cool map. It is mostly indoor however you could decide to take our your Sniper Rifle and take cover from the `front` of the map, in one of the buildings, or you can choose to snipe from the rooftop, yes, a rooftop.
There are small corridors where most of the fighting takes place, and they all lead to the center of the map. Computer and TV screens practically everywhere, one well-placed grenade and the room goes boom. Not a very good use of a helicopter or an airstrike on this map, unless you see most of the enemy team wondering around on the limited outdoor area.
Assault rifles are your friend, as are SMGs.