May be required to perform such additional duties as structural fire fighting, aircraft fire/crash/ rescue duty, security guard, snow removal, munitions loading and handling, heavy equipment operator, maintenance of facilities and equipment, or serve as a member of a team to cope with natural disasters or civil emergencies. Removes and replaces aircraft components such as control surfaces, engines, constant speed drive, engine mounted gear boxes, wing fuel tanks or cells, landing gear mechanisms, wheels, brakes and tires.