An Elite group of U.S. Navy Seals.
Most notably, they are the elite group responsible for the killing of terrorist, Osama Bin Laden.
Osama Bin Laden: No one will get me now, I'm so totally invincible and brave, hiding here like a little bitch.
U.S. Navy Seal Team Six: "Roger that, tango in my sights, over". ...... "Headshot".