| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | air defense system | Western countries | Deployed for protection against airborne threats such as military aircraft and missiles | 1 |
| 2 | air defense system | Western countries | Crucial for national security and defense against potential aerial threats. | 1 |
| 3 | defense system | Western countries | Investment in advanced military defense systems is a top priority for national security. | 1 |
| 4 | defense system | Western countries | Investment in advanced missile defense systems and military technology is a key aspect of national security and defense strategy. | 1 |
| 5 | performing air defense | Western countries | Performing air defense is a crucial aspect of national security, involving advanced radar systems and missile defense capabilities. | 1 |