Light infantry

Light Infantry are a Terran unit introduced in StarCraft: Ghost. They are lightly armed and armored and specialize in defending installations.

Light Infantry armor isn't completely sealed the way Marine armor is. Their far less bulky armor allows them to operate vehicles and move more quickly than Marines but provides less protection.

Armaments
Light Infantry have a wide range of weapons they can use. Their primary weapon is the Torrent SR-8 Shotgun, which can either fire regular shots or adamantine slugs (the documentation varies on this point). The shotguns are more suited for their interior duties (and deal a lot of damage at close range). They also often carry a Submachine Gun or automatic rifle.

Light Infantry equipment varies depending on the mission as well; they can carry BE3 Sticky Grenades, for instance, but only during Mobile Conflict missions.

Constructable Weapons
Light Infantry are also technically proficient, building and operating sensors which can detect cloaked units and have the ability to build and service armored flak gun turrets, which can be placed either in an installation or on a battlefield; the flak guns are long-ranged weapons. Light Infantry can build automated chain guns which attached to vehicles. These automated weapons are short-ranged and are more powerful than the shotguns they normally carry.