The Underwater Defence Unit of Turkey

ISTANBUL, TURKEY - SEPTEMBER 13: An unmanned aerial vehicles (UAV), drone used by team members of the 'Underwater Defence' (SAS), the special operation unit of the Turkish Navy for exploring is seen in a military training at Beykoz district of Istanbul, Turkey on September 13, 2018. Commandos of 'Underwater Defense Group Command' follow their tough military trainings as; deployment in a field, coastal defence operations, deactivation or disposal of explosives and mines. SAS commandos completed many critical missions, especially in the "Operation Olive Branch" and "Operation Euphrates Shield" and counter-terrorism operations, successfully. (Photo by Muhammed Enes Yildirim/Anadolu Agency/Getty Images)