Alien Turrets are found in great numbers scattered across the base. Alien towers and vessel tend to have several Plasma Cannons on the outside of the structure. Alien base structures also have many standing turrets on the inside of the base that fire off rounds quickly at the player. Turrets have an audible turning sound when locking onto a target.
The Tripod Turret is the stronger than the Turret Stand.
The Turret Stand is the most common turret to find inside of alien base structures.