| Time-Critical Underwater Sensor Diffusion with No Proactive Exchanges and Negligible Reactive Floods Recent countries visiting this post |  |
 | 3 | United States |
 | 2 | |
 | 1 | Sweden |
 | 1 | China |
| Time-Critical Underwater Sensor Diffusion with No Proactive Exchanges and Negligible Reactive Floods Recent countries visiting this post | |
| 3 | United States |
| 2 | |
| 1 | Sweden |
| 1 | China |