This SSO special forces unit, he had heard about it.
It is the most elite and also the most low-key ace of the Russian Federation Armed Forces—the Special Operations Command (SSO, acronym SSO).
Unlike the more publicly known counter-terrorism units "Alpha" and "Signal Flag" under the Federal Security Bureau (FSB), the SSO is a strategic-level special force directly under the Russian Ministry of Defense, benchmarked against the United States' Delta Force or Britain's SAS, serving as the sharp blade for the Russian Army in overseas intervention and executing high-difficulty special operations missions.
