Duties: 1: Inspects, tests, troubleshoots, maintains, disassembles, repairs, installs, modifies, stores, issues, fits, and adjusts aircrew flight equipment and chemical/biological defense equipment such as flight helmets, oxygen masks, helmet mounted devices, survival kits, night vision systems, various freefall, ejection, cargo, and extraction parachutes, anti-G suits, eye and respiratory protective equipment, anti-exposure suits, chemical and biological protective devices, single place and multi-place life rafts, emergency signaling and communication devices such as survival radios and beacons, and other types of aircrew survival systems. Also, disassembles, repairs, tests, troubleshoots, examines, inspects, fits, modifies, maintains, installs, repacks, and determines serviceability of helmets, torso harness assemblies, preservers, parachutes, life rafts, chemical and biological protective devices, survival kits, oxygen masks, anti-G-suits, etc.