The SPARTAN-III Gamma Company, formally known as the Naval Special Commando Unit (NSCU) in the classified literature, is a UNSC special operations force capable of prosecuting advance force operations, high-value target operations, covert action, and deep strike operations. It is the premier UNSC counterterrorism and unconventional warfare unit, and as a special mission unit of the UNSC Advanced Special Operations Command, it is employed as a highly mobile contingency strike force capable of preparing an overt or covert response to emerging crises that effect the galactic security of the UNSC.