Specialty Summary. Maintains and operates petroleum, missile and alternative fuels and cryogenic facilities and equipment. Receives, stores, and issues petroleum fuels and cryogenics products. Performs quality analysis on petroleum and cryogenics products. Performs in-depth maintenance on fuels handling vehicles and equipment dispensing systems and operator maintenance on facilities. Prepares receipt, inventory, and issue documents for fuels and cryogenic products accounting. Operates specialized mobility fuels equipment. Related DoD Occupational Subgroup: 182100.