A declassified Cold War-era file from the CIA has gone viral over its coverage of a supposed clash between Soviet soldiers and a UFO. Following the collapse of the Soviet Union in 1991, the CIA acquired a 250-page KGB report recounting the events that transpired after a platoon fired at a flying saucer over Ukraine. The report included eyewitness accounts and pictures of the aftermath. The report claims Soviets conducting a training exercise in Ukraine spotted a "low-flying spaceship in the shape of a saucer" soaring above their heads. During the encounter, one of the Soviets fired a surface-to-air missile, which struck the UFO and sent it crashing to the ground. "It fell to Earth not far away, and five short humanoids with 'large heads and large black eyes' emerged from it," the report claims. After escaping the debris of their ruined ship, the beings huddled together and "merged into a single object that acquired a spherical shape," the surviving soldiers recalled. "In a few seconds, the spheres grew much bigger and exploded by flaring up with an extremely bright light. At that very instant, 23 soldiers who had watched the phenomenon turned into ... stone poles," the report states. "Only two soldiers who stood in the shade and were less exposed to the luminous explosion survived," it added. The KGB allegedly took custody of the "petrified soldiers" and the ruined spacecraft, which were transported to a secret base near Moscow.