Take control of one of five Terran factions - Raynor's Raiders, the UED, Terran Dominion, Umojan Protectorate or the Terran Confederacy and battle for multiplayer supremacy.
The Dominion's "Grizzly" Dropship can be upgraded with a turret attack and increased health. The turret will fire while moving as well, so the Grizzly can strafe targets while performing a drop.