Secret Service K9 EOD Unit Challenge Coin Army Special Forces and original artwork done for

and original artwork done for the coin

CH-47D Chinook military helicopter operating with the call sign Extortion 17 (pronounced "one-seven") was shot down while transporting a Quick Reaction Force attempting to reinforce a Joint Special Operations Command unit of the 75th Ranger Regiment in the Tangi Valley in Maidan Wardak province

(REF: Wikipedia - Tier-1 Forces)

[119] According to a CNN report

original Circa 1981

Secret Service K9 EOD Unit Challenge Coin Army Special Forces and original artwork done for1 3 4 inch Challenge Coin Secret Service K9 EOD Unit Challenge Coin Canine Explosives Detection Unit Uniformed Division