The Militaires Sans Frontières made use of various camps due to their nomadic nature, although they eventually gained a forward operating base in the form of Mother Base, which was originally a OTEC offshore research plant situated in the Caribbean before it was purchased by a front company by the KGB agent Vladimir Zadornov, who supplied the base to them as down-payment for hiring their services in Costa Rica. They eventually expanded it and even completely renovated it to create a hexagon-based design with multiple connected struts. However, it was destroyed several months later by XOF and Skull Face.