Pluto Rising A soldier instructs a Bulgarian soldier on how to use American weaponry during Pluto Rising at Novo Selo Training Area, Bulgaria, March 18, 2021. The exercise improves NATO’s ability to conduct integrated multinational planning, enhance interoperability and deter aggression in the Black Sea region. SHARE: Download: Full Size (0.43 MB) Tags: Army, NATO, Training, Partnerships, Bulgaria, Pluto Rising Credit: Army Spc. Jabari Clyburn VIRIN: 210318-A-RR275-629C.JPG Photo Gallery