Taking Cover Hungarian and Macedonian special operations forces provide security during exercise Black Swan in Szolnok, Hungary, July 21, 2017. Black Swan was a Hungarian-led special operations forces exercise held in locations across Bulgaria, Hungary and Romania, June 26-July 22, 2017. SHARE: Download: Full Size (3.71 MB) Tags: Special Forces, SOCEUR, sof, Black Swan 17, Soldiers, Army Credit: Staff Sgt. Aaron Duncan VIRIN: 170714-A-DL944-009.JPG Photo Gallery