A small unmanned aerial system flies over Naval Base Ventura County, Point Mugu, California. Program Executive Officer Land Systems recently started delivering the Installation-Counter small Unmanned Aircraft Systems system to select Marine Corps installations. Known as I-CsUAS, the system is designed to protect Marine Corps installations by detecting, identifying, tracking and defeating small UASes such as commercially-available drones. (U.S. Navy photo by Ensign Drew Verbis) - A small unmanned aerial system flies over Naval Base Ventura County, Point Mugu, California. Program Executive Officer Land Systems recently started delivering the Installation-Counter small Unmanned Aircraft Systems system to select Marine Corps installations. Known as I-CsUAS, the system is designed to protect Marine Corps installations by detecting, identifying, tracking and defeating small UASes such as commercially-available drones. (U.S. Navy photo by Ensign Drew Verbis)