U.S. Army Soldiers work with Bulgarian #Army #Soldiers on a joint training exercise called Operation Pluto Rising, here, Mar. 18. br br The two armies refine inoperable capabilities by rehearsing tank maneuvers integrated with mortar support fire. .br br "The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement."br br br br Credit to : #USArmy video by Spc.