Israeli Duvdevan Unit, One of the Premier CT Units in the World
The Israelis are no strangers to the counter-terrorist world of Special Operations. They arguably have the most experience in that they have been dealing The initial group of Duvdevan commandos came from S-13, the Israeli equivalent to U.S.Navy SEAL teams, why they use an anchor as part of the design of their unit patch.
Source: sofrep.com