Soviet pilots Sergei Gritsevets (third left) and Grigory Kravchenko (center), Twice Heroes of the Soviet Union.
- Categories: Unrest, Conflicts & War
- Location: Ulaanbaatar, Mongolia
- Event date: 12.09.1939
- Date published: 20.12.2004
- Author: Temin
- Source: Sputnik
- Credit: Sputnik
- Original: J67-3615, 35 mm film
- Media: JPEG, 3543x2376px, 2Mb