Class-61 Technicians are human engineers responsible for the maintenance and proper donning of Mjolnir Powered Assault Armor used by SPARTAN-IV operatives.[1]


While Class-61 Technicians were the only individuals aboard the UNSC Infinity with the clearance to handle the second generation of MJOLNIR armor, it is unknown if this designation of technician existed earlier when the first generation was in use. It is known that while a crew of techs or at least an armor-removal machine was required to safely remove an entire set of armor, a single SPARTAN-II was trained enough to replace and care for certain components.[2][3]