File:Su-20 RB4.jpg

Sukhoi Su-20, https://commons.wikimedia.org/wiki/File:Su-20_RB4.jpg

photo by Radomil, 6 June 2005, Poznań GNU head	Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.