| Answer | Crossword Clue |
|---|---|
| USN | First line of defense. |
| NAVY | Our first line of defense. |
| MISSILESILO | Farm's first line of defense? |
| SAILORS | Members of our "First Line of Defense." |
| tripwires | A comparatively weak military force employed as a first line of defense, engagement with which will trigger the intervention of strong forces |
| ADE | Line of defense |
| FORTS | Line of defense? |
| TRENCH | Soldier's line of defense |
| GOALIE | Last line of defense |
| MANNERHEIM | Finnish defense line of 1939 |
| salients | An outward bulge in a line of military attack or defense |
| gaps | a break in a barrier (as a wall, hedge, or line of military defense) |
