Consequences of disloyalty

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Across
  1. 3. Defends Nigeria. (12)
  2. 7. Controls goods entering and leaving Nigeria. (7)
  3. 8. A consequence of disloyalty. (10)
Down
  1. 1. Helps during disasters. (8)
  2. 2. Fights illegal drugs. (6)
  3. 4. Road safety agency. (4)
  4. 5. Serves Nigeria for one year after graduation. (4)
  5. 6. protect lives and property