Knowledge of materials (metallic and nonmetallic), and special processes (heat treatment of metals, welding, brazing, chemical processes/finishes and coatings, composite hardware manufacturing processes, metal bonding processes, nondestructive testing). The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.