Pantsir-S1 air defense system guarding the air base in Latakia, Syria
A Russian Pantsir-S1 air defense system, probably on a tracked GM-352 chassis, is seen on behind a concrete mixer in this photo handout from the Russian Ministry of Defense.
Mil.ru [CC BY 4.0], via Wikimedia Commons
Source: Pantsir-S1 air defense system guarding the air base in Latakia, Syria