“DE OPPRESSO LIBER” Interview with the Green Hawks The term Special Forces in the US refers to the special operations unit of the US Army, although outside its borders they are best known as "green berets" where their nickname comes from. With over 60 years of history and even more secrecy behind them than even the navy SEALs, this unit is very attractive to many airsofters that, like the Green Hawks, they are inspired to recreate it.