The Banshee is the Covenant's main ground attack aircraft.  Boasting a boosted gravity propulsion drive that allows it to perform acrobatic feats that its airframe would normally prohibit, twin plasma cannons, and a fuel rod cannon, the Banshee is capable of dishing out enormous amounts of damage and evading most incoming fire.  Its maneuverability comes at a cost though, as it can only withstand 303 to 683 kilojoules of punishment.