| Answer | Crossword Clue |
|---|---|
| defences | A means of protecting something from attack |
| stockades | A barrier formed from upright wooden posts or stakes, esp. as a defense against attack or as a means of confining animals |
| surgical | Denoting something done with great precision, esp. a swift and highly accurate military attack from the air |
| lifelines | A thing that is essential for the continued existence of someone or something or that provides a means of escape from a difficult situation |
| harden | to reinforce the structure of something to protect it from nuclear attack |
| hardens | to reinforce the structure of something to protect it from nuclear attack |
