The StarCraft II website has been updated with info on the Terran Tactical Strike Aircraft, Banshee unit, including some action clips from the game.
Many experiments with dedicated air-to-ground attack have been undertaken by the terrans. Various dead-end approaches were tried and then discarded: ordnance packages for dropships, remote semi-autonomous drones, and airborne artillery platforms, to name but a few. Such continual compromises eventually led to retrofitting variants of the Wraith space superiority fighter with a belly-mounted burst laser to fulfill the role in the short term. Even so, the abiding problem of finding truly effective air-to-ground support below battlecruiser weight remained.
Head over the official website to see more cool and interesting stuff about this banshee unit !