Cryptic Courage

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Across
  1. 3. — Boldness shown by a city oddly transformed? (8)
  2. 6. — Courage displayed by heroism in action (7) (cryptic definition)
  3. 7. — Strength from fort and duet mixed with I (9)
  4. 9. — Risk-taking ring surrounding advertisement (6)
  5. 10. — Staying power as race is upset after end (10)
Down
  1. 1. — Persistence with TEN inside a city (8)
  2. 2. — Resolve or coarse sand (4)
  3. 4. — Ghost's enthusiasm (6)
  4. 5. — Resolve as "I am not tended" is reorganized (13)
  5. 8. — Boldness when fear is less? (12)