Engineering

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Across
  1. 1. Protection of computer systems from digital attacks
  2. 3. Industry concerned with aviation and space flight
  3. 4. A plan giving lists of intended events and times
  4. 9. Consistently good in quality or performance
  5. 10. To keep something in good condition
  6. 13. Basic physical structures like roads, bridges, and power supplies
  7. 14. To follow a rule or regulation
  8. 15. To create a plan or drawing before building something
Down
  1. 2. To put a decision or plan into effect
  2. 5. A person who designs, builds, or maintains machines
  3. 6. Possible to do easily or conveniently; achievable
  4. 7. A liquid fossil fuel; crude oil
  5. 8. Weakness in materials caused by repeated stress
  6. 11. To roughly calculate the cost, value, or quantity
  7. 12. A barrier constructed to hold back water