Directly related fields include Automotive Repair, Diesel Maintenance, Heavy Equipment Maintenance, HVAC, Refrigeration, Engine Maintenance, Machining and Tooling, CNC/CAD, Aviation Maintenance, Small Engine Repair, Gas Turbine Systems, and/or Commercial/Industrial Maintenance. HII's diverse workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.