S-400 air defense systems are seen here during a Victory Day parade practice on a military airfield in Rostov-on-Don.
- Categories: Unrest, Conflicts & War
- Location: Rostov-on-Don, Russia
- Event date: 20.04.2017
- Date published: 20.04.2017
- Author: Sergey Pivovarov
- Credit: Sputnik
- Source: Sputnik
- Original: Digital
- Media: JPEG, 2795x1722px, 2.2Mb