Fribulan Tourists

Unlike some of their more hostile cousins, Fribulan tourists aren't very dangerous. But they can cause trouble in your base by taking over workstations, fighting with your operatives, and breaking things. If the mission allows, prevent these so-called "Fribulan friends" from getting into your base by placing automatic lasers outside every airlock, or even selling airlocks when the Frib approach to give your lasers a chance to shoot them before they can get inside.